cesare'17 international conference dead sea jordan 3-8 may ... · auxetics, taking as starting...

CESARE'17 International Conference

"Coordinating Engineering For Sustainability and Resilience"

Dead Sea – Jordan 3-8 May 2017

Jordan University of Science and Technology

Irbid - Jordan

Sponsors

CESARE’17

Book of

Abstracts

CESARE’17

Steering Committee

A. Nuseirat (Jordan) L. Silva (Portugal)

C. Borri (Italy) M. Sterling (UK)

C. Baker (UK) M. Veljkovic (The Netherlands)

D. Bikas (Greece) M.T. Obaidat (Jordan)

F. Mazzolani (Italy) O. Nuseir (Jordan )

G. Stavroulakis (Greece) P. Schaumann (Germany)

G. Altay (Turkey) T. Stathopoulos (Canada)

G. Ayala (Mexico)

Organising Committee

A. H. Almasri (JUST-Jordan) K. M.Abdalla (JUST-Jordan)

C.C. Baniotopoulos (UoB-UK) M. Gkantou (UoB-UK)

E. Efthymiou (AUTH-Greece) M. Kandah (Jordan)

F. A. Abu Al-Rub (JUST-Jordan) O. M. Haddad (JUST-Jordan)

H. S. Nimry (JUST-Jordan) Y.A. Qawasmi (JUST-Jordan)

Website committee

A.H. Almasri (Jordan) H. Nimry (JUST)

N. Shbeeb (JUST) C.C. Baniotopoulos (UK)

M. Almomani (JUST) A. S. Sadaqah (JUST)

I. Hammouri (JUST)

Supporting committee

Khawla Tahtamoni Mustafa Nussayrat

CESARE’17

Scientific Committee A. S. Shlash (Jordan) M. Shawagfeh (Jordan)

A. Shanableh (UAE) M. Mahasneh (Jordan)

Α. Zerzour ( Algeria) M. Y. Abu-Farsakh (USA)

A. S. Alsyyab (Jordan) M. Shiyab (Jordan)

B. Blocken (The Netherlands) N. Armoti (Jordan)

C. Benzouz (Algeria) N. Gebberken (Germany)

C. Anagnostopoulos (Greece) N. Shbeeb (Jordan)

C. Efstathiades (Cyprus) O. Maaitha (Jordan)

C. Gantes (Greece) O. Rio (Spain)

C. Norton (Ireland) R. Hatamleh ( Jordan)

C. Rebelo (Portugal) R. Landolfo (Italy)

E. Mistakidis (Greece) R. P. Borg (Malta)

D. Chatjimitsis (Cyprus) R. Al-Raoush (Qatar)

D. Kaziolas (Greece) R. Block ( Netherland)

G. Abu-Farsakh (Jordan) S. Arababeh (Jordan)

E. Efthymiou (Greece) S. A. Barakat (UAE)

F. Wald (Czech Republic) S. A. Taqieddin (Jordan)

G. Kaklauskas (Lithuania) S. Dirar (U K)

H. Fuladi (Malaysia) T. Khedaywi (Jordan)

H. Hemida (UK) T. Al-Rwsan (Jordan)

J. Neugebauer (Austria) T. Bacon (Poland)

L. Braganca (Portugal) T. Ninouh (Algeria)

J. Yang (China) T. Mantopoulou (Greece)

J. Belis (Belgium) V. Ungureanu (Romania)

K. Bani-Hani (Jordan) Y. Obaidat (Jordan) L. Gardner (UK) Y. DIAB ( FRANCE)

M. Jaradat (Jordan) W. Abu-El-Sha'r (Jordan)





Irbid - Jordan

Sponsors

LIST OF ACCEPTED ABSTRACTS

PART I

Sustainability and Resilience

in the Built Environment





Irbid - Jordan

Sponsors

NIKE GOES AUXETIC. WHY?

Georgios E. Stravroulakis

School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania,

Greece

e-mail: [email protected]; web page: www.comeco.tuc.gr

Keywords: auxetic materials, topology optimization, vibration suppression

ABSTRACT

Auxetic structures are mechanical metamaterials that have a negative Poisson’s ratio. Recent developments in

the area of topology optimization give us the ability to design the microstructure of auxetic materials [1]. Their

dynamic behavior is interesting and leads to useful applications. Auxetics show enhanced damping properties and

can be used as passive damping materials [2]. Industry, including Nike [3], have submitted a number of patents for

novel structures including auxetics. In the plenary lecture we will review theory and possible applications of

auxetics, taking as starting point the newly launched athletic shoes of Nike with auxetic soles.





Irbid - Jordan

Sponsors

DESIGN FOR SUSTAINABILITY AND RESILIENCE-NEW TERMS FOR

TRADITIONAL TASKS OR AN ENLARGEMENT OF THE PERSPECTIVES FOR

ENGINEERS

Thomas P. Lützkendorf1

, Maria Balouktsi1

1Karlsruhe Institute of Technology, Centre for Real Estate, 76131 Karlsruhe, Germany

e-mail: [email protected] ; web page: http://www.oew.kit.edu/english/index.php

Keywords: Construction works, Life cycle analysis, Sustainability assessment

ABSTRACT

The fulfilment of requirements for the technical and functional quality of building components and construction

works, as well as their optimization in terms of construction costs or construction time form part of the traditional

design tasks performed by engineers. However, nowadays, they are also confronted with issues concerning the

contribution of constructions to sustainable development and a new theme: resilience. But are these tasks really new?

The paper discusses the traditional engineering tasks and approaches that already provide a starting point for

assessing the sustainability of building components and structures. For example, structural stability, fire-, sound- and

heat-protection, as well as flexibility and adaptability, can be considered as significant starting points in this regard.

New tasks arise in the area of sustainable use of resources.

This paper presents approaches to life cycle analysis and the state of international standardization. It shows that

life cycle assessment and a full life cycle analysis [1] can support the work of engineers. Finally, the relationship

between sustainability and resilience is discussed. Robust, durable structures can support sustainable development.

However, the environmental, economic and possibly social consequences (here in terms of benefits and costs) of more

resilient structures are to be taken into account.

mailto:[email protected]

http://www.oew.kit.edu/english/index.php





Irbid - Jordan

Sponsors

CLIMATE ADAPTIVE NEIGHBORHOODS

Daniel M. Muntean1

and Viorel Ungureanu2

1Department of Steel Structures and Structural Mechanics, Politehnica University of Timisoara,

str. Ioan Curea, no. 1, 300224, Timisoara, Romania,

[email protected], [email protected]

Keywords: Energy efficiency, adaptive building, residential buildings, retrofitting, smart grid

ABSTRACT

The so called “grey neighborhoods” were built between 1958 and 1965 due to the expansion process of the heavy

industry near the cities in order to provide enough homes for the workers. Standardized collective housing typologies

have been used, organized in such a way to form an inner courtyard.

Today, in Romania these neighborhoods represent a big majority of the constructed urban environment. Their

overall quality has degraded during the time and small improvements have been made. They now fail to meet modern

living standards and contribute to a general trend of moving out to the new sprawl areas around the city. The public

spaces were left unattended and the green areas around the blocks were occupied by cars and unauthorized garages.

Because they are so wide spread, introducing an adaptive system that improves their overall quality will have a major

impact not only on the neighborhoods but also on the quality of life.

This paper presents a possible revitalization design scenario of these neighborhoods by introducing adaptive design

principles. The apartments are reconfigured and new extensions are added on the current unused attics. More, adaptive

building envelope is provided and elevators to facilitate access to the upper levels are integrated. The inner courtyards

are redesigned into a positive space. Renewable energy systems are integrated and a “smart grid” connection system

is installed.





Irbid - Jordan

Sponsors

ASSEMBLY PROGRAMMING SIMULATION OF AUTOMATED CONSTRUCTION

FOR MODULAR BUILDINGS

Wu-yue Xiong, Jian Yang*, Hao Hu, Feng Xu

School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai

200240, PR China

State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China

Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai

200240, P.R. China

*e-mail: [email protected]; *web page: http://naoce.sjtu.edu.cn/zc/1779.html

Keywords: Assembly programming simulation, Modular buildings, BIM, Virtual assembly sequencing, Path

planning

ABSTRACT

Modular buildings have undergone a rapid development driven by their favorable characteristics, such as fast

construction, waste reduction and clean on-site environment. This paper proposes an assembly programming

simulation method, which can automatically generate the assembling sequence of pre-fabricated members and

coordinate the programming of the entire construction. This method will potentially facilitate the newly emerging

technologies such as 3D-printing and the robotic construction in the construction automation. By using the Building

Information Model (BIM), the virtual assembly sequencing and the path planning, which were initially applied in the

manufacturing industry, can be realized in the construction industry. An evaluation and decision-making system is

then established to conduct the assembly programming simulation model. The assembly-relation and the hierarchical

structure tree models are built using the semantic formulation for the pre-fabricated members to address the assembly

sequence planning. The geometric inference with the precedence constraints as well as the disassembly method are

applied to resolve these two models afterwards. It is followed by utilizing the A* algorithm and the human-computer

interaction functions to plan the assembly path. A series of multi-dimensional indexes will be determined to proceed

within the system.


http://naoce.sjtu.edu.cn/zc/1779.html





Irbid - Jordan

Sponsors

SUSTAINABLE TRANSPORT DEVELOPMENT IN LITHUANIA: AIR POLLUTION

AND NOISE REDUCTION IN CITIES, CONSTRUCTION OF BYPASS,

IMPLEMENTATION OF SUSTAINABLE INNOVATIONS

Zaneta Stasiskiene1

, Ona Samuchoviene2

1Institute of Environmental Engineering , Kaunas University of Technology, Gedimino str. 50, Kaunas

LT44239 LITHUANIA

e-mail: [email protected] ; web page: http://ktu.edu 2Institute of Environmental Engineering , Kaunas University of Technology, Gedimino str. 50, Kaunas

LT44239 LITHUANIA

Keywords: Sustainable Transport, Prevention of Air pollution, Sustainable Innovations

ABSTRACT

Noise generated by transport and air pollution has a significant direct impact on human health as well as quality of

residential and recreational environment. The paper focuses on noise modelling program CADNA and air pollution

modelling software ISC - AERMOD-View with regard to previous studies of relation between noise and air pollution

and traffic along with its individual characteristics where impact of transport on the environment quality in the capital

of Lithuania - Vilnius in terms of infrastructure development is evaluated. For that purpose, a less busy 2.7-kilometre-

long street is selected where the traffic after the reconstruction by widening it would increase several times and the

street would become one of the city’s most important transport corridors and outside bypass of the city. The paper

aims at assessing the direct relation between noise and air pollution and traffic density and mitigation measures without

which today’s urban development is hardly possible in terms of sustainable and conducive human habitation.


http://ktu.edu/





Irbid - Jordan

Sponsors

THE POTENTIAL OF ENVIRONMENTAL MANAGEMENT ACCOUNTING TO

FOSTER SUSTAINABLE INNOVATIONS

Zaneta Stasiskiene1

, 1Institute of Environmental Engineering , Kaunas University of Technology, Gedimino str. 50, Kaunas

LT44239 LITHUANIA

e-mail: [email protected] ; web page: http://ktu.edu

Keywords: Environmental Management Accounting, Sustainable Innovations, Supply chain, SMEs

ABSTRACT

On the global scale of the innovation development the democratization, decentralization, and hyperpersonalization

of manufacturing is taking a lead role. This study analyses the potential of environmental management accounting to

foster sustainable innovations. We collected survey data from Lithuania and several other EU countries and analyzed

the motivations which help small and medium (SMEs) production companies develop and implement innovations,

which integrate technological, ecological and social aspects into products, processes and organizational structure. The

SMEs were chosen due to their increased recognition as central contributors to the sustainable development. Special

attention was paid to the companies which are dealing with global supply chains with large number of suppliers in the

diverse socio-economic contexts, growing demand from their customers’ side and stricter regulations on the global

level.


http://ktu.edu/





Irbid - Jordan

Sponsors

A PROPOSED AUTOMATED SYSTEM FOR QUALITY ASSURANCE SUSTAINABILITY OF ENGINEERING EDUCATION

2Yahia Qawasmi ,1*Mohammed A. Almomani

1 Department of Industrial Engineering, Faculty of Engineering, Jordan University of Science and

Technology, P.O. Box 3030, Irbid, 22110, Jordan.

e-mail: [email protected]

Science and Technology, Department of Civil Engineering, Faculty of Engineering, Jordan University of 2

P.O. Box 3030, Irbid, 22110, Jordan.


Keywords: Quality Assurance; Sustainability; Engineering Education

ABSTRACT

This paper presents a framework and methodology that facilitates implementing quality assurance principals at the field of Engineering Education. The focus is on delivering a “Semester Course Report” for all courses offered at the engineering school. The objective is to improve the quality of education, and to ensure sustainability of improvement achieved by continuous feedback of the running courses. The proposed framework is based on the programs outcomes, and thus courses outcomes as set and approved by the strategic plan of the university, feedback of program stakeholders, and the Accreditation Board for Engineering Technology (ABET). The system gives the instructor the ability to choose appropriate assessment tool for each outcome, and the Key Performance Indicators (KPI) that are planned to measure the quality of learning to end with list of actions that contribute to continuous improvement of learning process. An example of the automated produced report is used to illustrate the proposed methodology.





Irbid - Jordan

Sponsors

NONLINEAR FINITE ELEMENT FORMULATION FOR CONTACT PROBLEMS

WITH NONCONFORMING MESHES

Layla Amaireh1

and Ghadir Haikal2

1Department of Civil Engineering, Applied Science University (ASU), Amman, Jordan

[email protected] 2Lyles School of Civil Engineering, Purdue University, West Lafayette, Indiana, USA

[email protected] Keywords: Nonconforming Meshes, Contact, Guass Kronrod Quadrature, Interface Formulation.

ABSTRACT

Finite element simulations of contact problems often involve modeling the interaction of multiple bodies across a

non-confirming interface. Non-Confirming Meshes (NCM) are typically associated with large sliding or adaptive

refinement on one side of the interface to capture localized nonlinear behavior due to large deformations, damage and

inelasticity. The use of NCMs, however, presents a number of numerical issues; the main challenge with such

discretizations is to ensure compatibility of the kinematic and traction fields along the non-conforming interface. The

Enriched Discontinuous Galerkin Approach (EDGA) (Haikal and Hjelmstad, 2010) addresses this challenge by

implementing a local enrichment along with an interface stabilization procedure, based on the Discontinuous Galerkin

formulation, to enable a two-pass approach in enforcing contact conditions that preserves the weak continuity of

surface tractions without introducing dual interface fields. In this study, the Enriched Discontinuous Galerkin

Approach (EDGA) is extended to model contact in the presence of material and geometrical nonlinearities. The

enrichment used in the EDGA introduces a higher-order interpolation on the contact interface, which requires an

increase in the integration rule. To avoid changing the integration point locations to accommodate the higher-order

interpolation we employ a progressive integration rule (Gauss-Kronrod quadrature) that preserves material history at

existing integration points.







Irbid - Jordan

Sponsors

PART II

Sustainability and Resilience

in Materials, Buildings and

Infrastructure





Irbid - Jordan

Sponsors

OFF-SITE MODULAR BUILDING CONSTRUCTION WITH COLD-FORMED

STEEL

H. Zhang1, J. Yang2 and C. Baniotopoulos3

1 School of Civil Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K.


2 School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University,

Shanghai

200240, P.R. China; School of Civil Engineering, University of Birmingham,

Edgbaston, Birmingham, B15 2TT, U.K.

e-mail: [email protected] ;

web page: http://www.birmingham.ac.uk/staff/profiles/civil/yang-jian.aspx

3 School of Civil Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K.


web page: http://www.birmingham.ac.uk/staff/profiles/civil/baniotopoulos-charalampos.aspx

Keywords: off-site, Modular construction, Cold-formed steel, Sustainability

ABSTRACT

Energy conservation and environmental protection are increasingly raising concerns in various industrial sectors,in

particular, the construction industry, which normally accounts for 40% energy consumptions and 1/3 carbone missions.

In the past two decades, modern construction methods, e.g. off-site modular construction, have been actively sought

and pursued by policy makers and industrial leaders in order to tackle these problems all around the world. Meeting

all conventional requirements such as safety, serviceability and durability, the off-site modular construction has

emerged as a more advantageous construction method featuring material efficiency, high quality, flexible adaptability,

reduced wastes and lower energy demands. This new construction technology has been adopted

word-widely but with a high imbalance in the extent and scope of technology progress and the

engineeringapplications. Nowadays, modular construction is mainly used for residential, school, hotel buildings or

shops, etc. and the building components or the entire building units are produced in the manufacturing sites. One of

the most common materials used for this type of construction is cold-formed steel. This paper is to review the state-

of-the-art development of off-site modular building construction with cold-formed steel in terms of the technical

progress, economic behaviour,sustainability and social impact, based on which a market prospect is proposed.





Irbid - Jordan

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ANALYSIS OF THE STRESS DISTRIBUTION IN CASTELLATED BEAMS WITH

STIFFENERS

T. Aldafafea1,2, S. Durif1,2, A. Bouchaïr1,2 and E. Fournely1,2

Ferrand, France-63000 Clermont-Université Clermont Auvergne, Institut Pascal, BP 10448, F1

63171 Aubière, France-CNRS, UMR 6602, Institut Pascal, F2 Keywords: Stress concentration, castellated beams, Vierendeel bending, local buckling, FEM model, analytical

model

ABSTRACT

The use of cellular beams is common in steel frames to increase the mechanical performances, mainly the moment

of inertia. However, the presence of large openings in the web of a beam generates specific mechanical behavior

compared with full web beams [1-2]. In addition, the usual failure modes associated with bending or shearing of the

cross section, the other modes of failure are specifically related to the presence of openings: the failure mechanism by

Vierendeel bending and the local buckling [3-4].

The work presented in this study aims to improve knowledge on the behavior of beams with web openings with and

without stiffening. The use of stiffeners can be a solution to increase the resistance of the zones around the openings.

They can be positioned in the longitudinal or vertical direction with various lengths. They can increase the stiffness

and the resistance, controlling some failure modes, of the zone around the opening. The aim of this study is to develop

and validate a Finite Element Model (CAST3M Software) considering the material and geometrical nonlinearities. The

model is used to evaluate the influence of various positions and geometrical configurations of the stiffeners around the

rectangular openings on the stress distribution. This stress distribution, mainly the compression, can influence the

failure mode of the beam. It can be used to propose an analytical model predicting the strength of the cellular beams

with opening.





Irbid - Jordan

Sponsors

FINITE ELEMENT MODELLING OF PRELOADED GUSSET PLATE CONNECTION

BETWEEN POLYGONAL BUILT-UP MEMBERS

Slobodanka Jovašević1

, Carlos Rebelo2

and Marko Pavlović3

1 Department of Civil Engineering, University of Coimbra, P-3004 516 Coimbra, Portugal

e-mail: [email protected] 2 Department of Civil Engineering, University of Coimbra, P-3004 516 Coimbra, Portugal

e-mail: [email protected] 3 Department of Structural Engineering , TU Delft, Postbus 5 2600 AA Delft, The Netherlands


Keywords: wind energy, lattice towers, gusset plate connections polygonal built up sections

ABSTRACT

In the last decades the demand for renewable energies, including wind energy, is increasing. With this increase

more powerful wind energy converters that require higher supporting structures are needed. The solution to reach

higher heights is construction of lattice towers. The major disadvantage of lattice towers is large number of the installed

bolts. Therefore, the steel hybrid tower that combines the advantages of steel lattice (lower part) and tubular tower

(upper part) was proposed in SHOWTIME project. The sections used in lattice portion of the tower are built-up

polygonal sections composed of cold-formed pieces connected together with preloaded bolts. The goal with using

built-up polygonal cross-section is to improve fatigue life of the connections and members. The focus in this paper is

numerical investigation of preloaded gusset plate connections between these types of members. The highly detailed

three-dimensional (3-D) finite element model has been created using ABAQUS software. The connection model has

been analyzed through the elastic and plastic ranges up to failure. Bolt shear and bending, and gusset plate and brace

bearing have been observed as failure modes.








Irbid - Jordan

Sponsors

COMPUTATIONAL DESIGN METHODOLOGY OF FREE-FORM STEEL

STRUCTURES BY MEANS OF TOPOLOGY OPTIMIZATION AND NONLINEAR

STRUCTURAL ANALYSES

Ilias D. Thanasoulas1

, Charis J. Gantes1

and Nikos D. Lagaros2

1 Institute of Steel Structures, School of Civil Engineering,

National Technical University of Athens, Heroon Polytechniou 9, Zografou, Greece

e-mail: [email protected] 2 Institute of Structural Analysis and Antiseismic Research, School of Civil Engineering,


Keywords: Free-Form, Steel Structures, Topology Optimization, Nonlinear Analyses

ABSTRACT

The technological innovation of the last few decades, regarding the steelmaking processes and the steel products,

as well as the associated computational tools employed in current engineering analysis, have influenced the design and

construction of modern steel structures. More and more architects, designers, artists and engineers create unique

products and structures having shapes that are often not in accordance with established structural principles. Such

structures are denoted as free-form; typical examples are leaning and twisted towers, sculpted bridges, free-form

enclosures, not complying with the commonly linear/orthogonal structural framing systems. In this work a reliable

methodology is proposed, aiming at addressing the structural design difficulties of free-form steel structures in an

efficient manner. Firstly, topology optimization is employed in order to form the structural bearing system of an

architecturally desirable, given shape of a construction, in an optimum way in terms of weight or some other objective

function. Subsequently, a finite element model of the optimized structure is developed. Geometry and Material

Nonlinear Analyses with initial Imperfections (GMNIA) are carried out, aiming at understanding the behavior and

evaluating the ultimate strength of steel members. A characteristic case study is investigated, demonstrating the

advantages of the aforementioned design methodology






Irbid - Jordan

Sponsors

ADVANCED NUMERICAL SIMULATION OF LOAD-BEARING

COLD-FORMED-STEEL DRYWALL SYSTEMS FURNACE TESTS


, Iason K. Vardakoulias1

, Dionysios I. Kolaitis2

,

Charis J. Gantes1

and Maria A. Founti 2

1 Institute of Steel Structures, School of Civil Engineering,


e-mail: [email protected] 2 Laboratory of Heterogeneous Mixtures & Combustion Systems, School of Mechanical Engineering,


Keywords: Thermo-Mechanical Coupling, Fire Tests, Drywall Systems, Cold-Formed Steel

ABSTRACT

Load-bearing cold-formed steel drywall systems exhibit highly satisfactory fire resistance characteristics, which

are mainly attributed to the excellent fire behavior of the sheathing gypsum plasterboards. Traditionally, the fire

resistance rating of such wall systems is based on large-scale fire tests, which are significantly cost- and time-

consuming. Limited information is available concerning the numerical simulation of the aforementioned furnace tests

with finite elements, which usually employ several assumptions and uncertainties due to the complexity of the

assembly’s actual configuration. Past pertinent numerical studies utilized 2D finite element models for the heat transfer

analyses; temperature results were then introduced in the subsequent structural analyses of a single stud, where the

load-bearing capacity was assessed. In this study, an innovative and advantageous simulation methodology of Cold-

Formed Steel drywall systems fire tests is proposed, in terms of both accuracy and efficiency, consisting of 3D finite

element models. Transient Thermo-Mechanical Coupled (TMC) analyses accounting for geometry, contact and

material nonlinearities are performed on the drywall assembly in order to determine the load-bearing capacity under

fire conditions. The validity of the proposed simulation methodology is verified against full-scale furnace test results

available in the literature.






Irbid - Jordan

Sponsors

MACHINE LEARNING AND OPTIMALITY IN MULTI -STOREY STEEL FRAMES

Georgios K. Bekas 1and Georgios E. Stravroulakis2

1,2 School of Production Engineering and Management, Technical University of Crete, GR-73100

Chania, Greece

e-mail: [email protected] , [email protected]; web page: www.comeco.tuc.gr

Keywords: Machine learning, steel frame optimization, multi storey steel frames, evolutionary algorithms.

ABSTRACT

The present study investigates the potential of the implementation of machine learning techniques in optimized multi storey steel frames. The variables that are taken into account in the objective function of the optimization problem are the following: frame type (frame bay length optimality) and dimensioning of the cross sections. The objective function has the goal of attaining a minimum cost design based on market data, taking into account the results of structural analysis of the frames. A number of optimized examples with widely encountered cases of total lengths of frames and with various loadings are presented. Modeling is based on Eurocode 3. Optimization takes place with the use of evolutionary algorithms. The optimized results are subjected to predictive modeling based on neural networks. The objective of the study is to create predictive models with the aim of minimizing the usage of scarce resources.

http://www.comeco.tuc.gr/





Irbid - Jordan

Sponsors

FINITE ELEMENT MODELLING OF COMPRESSIVE AND TENSILE PRESTRESSED

TUBULAR MEMBERS

Michaela Gkantou1

, Marios Theofanous1

and Charalampos Baniotopoulos1

1School of Engineering (Department of Civil Engineering, University of Birmingham, Edgbaston B15

2TT, UK)


Keywords: FE, Prestress, Tubular, Grout, High Strength Steel

ABSTRACT

The current paper discusses the simulation of the structural behaviour of prestressed tubular members in steel grade

S460 and S690, through the execution of advanced numerical modelling. Numerical models are validated against

published experimental data [1], in which different initial prestress levels and the presence of grouting has been

examined for high strength steel compressive and tensile members. In order to accurately replicate the experimental

response through finite element modelling, certain parameters oblige careful consideration. The selected numerical

solver, the material models and the element types are therefore thoroughly described in the present paper. Upon

establishment of the numerical models, the numerically generated ultimate loads, failure modes and the full load-

deformation curves are compared with the experimental ones, indicating a successful validation. For the compressive

members, an imperfection study is executed in order to investigate the influence of the initial geometric imperfections

on the overall structural performance, showing that an imperfection magnitude of L/1000 predicts sufficiently the

experimental behavior. Evaluating both the experimental and the numerical results, it is concluded that, as anticipated,

prestressing enhances the load-bearing capacity for tensile members, whilst is detrimental for compressive members.






Irbid - Jordan

Sponsors

PUNCHING SHEAR STRENGTH OF FIBROUS HIGH STRENGTH REINFORCED

CONCRETE FLAT PLATE SLABS WITH ECCENTRIC LOADINGDr.

Abdulkareem D. Mahmood 1

and Sherwan M. Zaki2

1 Assist. Prof. College of Engineering/ Salahdin University/ Erbil, Iraq/ Email:

[email protected] 2 Assist. Lecturer /Civil Eng. Dpt. /College of Eng./Duhok University

Keywords: fibrous,reinforced concrete, flat plate, punching shear,cyclic loading.

ABSTRACT

This research, based on the experimental program conducted, discusses the punching shear strength of high strength

concrete slabs under reversed cyclic loading and the influence of the main variables including the effect of concrete

compressive strength, effect of steel fiber reinforcement, and effect of load eccentricity on the performance of slab-

column connections. The behavior is established by a study of deflections, crack pattern, rotations, strains, and ultimate

loads.





Irbid - Jordan

Sponsors

DURABILITY OF CONCRETE SEWERS: MONITORING, ASSESSMENT AND

IMPROVEMENT

Mojtaba Mahmoodian1

and Morteza A. Alani2

1Lecturer, School of Engineering, RMIT University, Melbourne, Australia

e-mail: [email protected] 2Professor, School of Computing and Engineering, University of West London, London, UK


Keywords: for instance Sustainability, Resilience, Robustness

ABSTRACT

The durability of concrete sewer pipes is affected by a variety of degradation mechanisms such as sulphuric acid,

chloride and sulphate attack. The problem of degradation of concrete sewer pipes has been a growing problem as these

infrastructure assets age. The destructive mechanisms can vary due to increase in the environmental factors such as

acidity and temperature. This study aims to investigate and compare the current monitoring and assessment methods

for concrete sewers with suggestions for improving their durability. The results of a comprehensive lab experiment in

the UK for investigating the combined effect of temperature and acidity on concrete durability is also reviewed. The

study also highlights the areas of research which need to be addressed for more sustainable concrete sewer systems (in

terms of materials as well as management).







Irbid - Jordan

Sponsors

PREDICTED STRAND TRANSFER LENGTHS IN FULL SCALE AASHTO

PRETENSIONED CONCRETE GIRDER

Rajai Z. Al-Rousan1

and Muneer H. Barfed1

1Department of Civil Engineering, Jordan University of Science and Technology, Irbid, Jordan


Keywords: predicted, Strand, Transfer Length, Full Scale, AASHTO Girders

ABSTRACT

In pretensioned concrete, the transfer length is defined as a distance that requires to transmit the fully effective

force from the prestressing strand to the concrete. Therefore, this study investigates the transfer length of the full scale

AASHTO pretensioned high strength lightweight concrete (HSLWC) girder by using nonlinear finite element analysis

package (ANSYS). The tested parameters include concrete cover (50 and 75 mm), concrete compressive strength (55,

70, and 83 MPa), concrete density (1440 and 1840 kg/m3), strand strength (1750 and 1890 MPa), strand spacing (50

and 43.75 mm) ,strand size (12.7 and 15.2 mm), and number of 12.7 strand (8, 10, 12, 14, and 16 strands). The

investigated results showed that the tested parameters had little impact on transfer length with significant impact on

the concrete strain and camber.






Irbid - Jordan

Sponsors

A NEW BREED OF SUSTAINABLE ULTRA-LIGHTWEIGHT AND ULTRA-

SHALLOW STEEL-CONCRETE COMPOSITE FLOORING SYSTEMS: LCA AND LCC

Inas Ahmed1

, Konstantinos Daniel Tsavdaridis2

, and Farzad Neysari4

1PhD Candidate, School of Civil Engineering, Institute for Resilient Infrastructure, University of Leeds,

Leeds, LS2 9JT, UK

e-mail: [email protected] 2Associate Professor of Structural Engineering, Institute for Resilient Infrastructure, School of Civil

Engineering, University of Leeds, LS2 9JT, Leeds, UK

e-mail: [email protected], web page: http://kostasdaniel.blogspot.co.uk 3Regional Technical Director UK(North), CADS Ltd.


Keywords: Steel-concrete composite, Flooring systems, Sustainability, LCA, LCC.

ABSTRACT

Sustainability and the reduction of CO2 emission have taken an important attention in all industries. In particular,

the construction industry is inlfuenced due to the high use of materials and the large amount of waste generated. An

enormous contribution to sustainable design can be made by changing the design of traditional members and systems

and integrating new or under-developed materials from the initial stages. The aim of this study is to present a new

composite flooring system which exercises the sustainability approach in the selection of its components. A

comprehensive evaluation of the new flooring system and a detailed comparison with existing shallow flooring systems

through Life Cycle Assessment (LCA) and Life Cycle Cost (LCC) is conducted. The comparison is performed based

on three stages (production stage, transportation and end of life stage). It is found that the new proposed flooring

system has a better performance than other shallow flooring systems in terms of energy consumption, carbon dioxide

emissions and cost.



http://kostasdaniel.blogspot.co.uk/






Irbid - Jordan

Sponsors

NUMERICAL SIMULATION OF SUSTAINABLE HIGH STRENGTH BOLTED SHEAR

CONNECTION USED IN STEEL-CONCRETE COMPOSITE JOINTS

Maitham k. Alibrahemy1,2,3, Sébastien Durif 1,2, Philippe Bressolette 1,2, and Abdelhamid Bouchaïr 1,2

1 Clermont Université, Université Blaise Pascal, Institut Pascal, BP 10448, F-63000 Clermont-Ferrand

University 2 CNRS, UMR 6602, Institut Pascal, F-63171 Aubière, France

3 Department of Civil Engineering, College of engineering, University of Kerbala, Iraq.

e-mail: [email protected], [email protected], philippe.bressolette@univ-

bpclermont.fr and [email protected];

Keywords: Beam-to-column joint, Bolted joints, Composite Beam, Numerical Simulation, Sustainability.

ABSTRACT

In many steel buildings, concrete topping is widely used to introduce the composite slab. High-strength bolts can

joints the concrete slab to steel beam or can be used in beam-to-column joints. Using this type of bolts can reduce the

construction cost, time and energy. The main advantage of this type of structure is that it can be maintained or reused

in simply way by unbolted the target section and the same thing can be use for recycle all structure parts at the end of

service-life. The present study describes the ultimate failure load in bolts and bolted plates in beam-to-column joints

in addition to bolts resistance used in to connect steel beam to concrete slab. Different steel grades are used for plate,

bolts and beams to improve the plate resistance, bolts shear capacity and reduce the beam self-weight to produce high

performance and achieve the sustainability. These parameters will improve in another way by adopting material

nonlinearities which is considered in this study by numerical simulation. The comparison between the finite element

results and recent experimental tests is achieved. Different types of failure were observed in FE analysis related to

different parameters such as bolt and hole size, space between holes...etc.





Irbid - Jordan

Sponsors

HYSTERETIC BEHAVIOURS OF RWS CONNECTIONS WITH COMPOSITE BEAMS

Mohamed A. Shaheen1


and Satoshi Yamada3

1Department of Civil Engineering, Al-Azhar University, Cairo, Egypt

e-mail: [email protected] 2School of Civil Engineering, University of Leeds, LS2 9JT, Leeds, UK

e-mail: [email protected], web page: http://kostasdaniel.blogspot.com.eg 3 School of Civil and Environmental Engineering, Tokyo Institute of Technology, Japan


Keywords: RWS connections, Plastic hinge, Vierendeel, Ductility, Composite beam-column connection.

ABSTRACT

This paper investigates the behaviour of the composite beam-to-column connections with a circular beam web

opening through a comprehensive FE analysis. Results showed that the circular web opening is capable to mobilise

the plastic hinge away from the column face, and accordingly, the ductility and energy dissipation of the connection

improve significantly without affecting the capacity of the connection. In previous research, the composite action was

not considered to account for the worst case in terms of the load carrying capacity. However, this study proves that the

composite effect should be included since it has a detrimental influence on the ductility and the rotational capacity

which may result in overestimated ductile behaviour. Also, it is concluded that the contribution of the composite action

to the load carrying capacity increases with the increase of the opening diameter. Therefore, the calculated negative

capacity tends to be very conservative if the composite effect is neglected when large opening diameter is used.



http://kostasdaniel.blogspot.com.eg/






Irbid - Jordan

Sponsors

INFLUENCES OF SLEEPER/TIE MATERIAL CHOICES ON GEORISKS IN

RAILWAY SYSTEMS UNDER CLIMATE UNCERTAINTIES

Sakdirat Kaewunruen1

, Luisa Macedo Paes Cortes Lopes2

and Dan Li3

1Birmmingham Centre for Railway Research and Education, School of Engineering, The University of

Birmingham, Gisbert Kapp Building, 52 Pritchatts Road, Edgbaston, B15 2TT UK

e-mail: [email protected];

web page: http://www.birmingham.ac.uk/staff/profiles/civil/kaewunruen-sakdirat.aspx 2 School of Engineering, The University of Birmingham, Gisbert Kapp Building, 52 Pritchatts Road,

Edgbaston, B15 2TT UK 3 School of Engineering, The University of Birmingham, Gisbert Kapp Building, 52 Pritchatts Road,

Edgbaston, B15 2TT UK

Keywords: Resilience, Robustness, Stability, Georisks, Sleepers, Materials, Railway, Infrastructure, Climate

Change, Uncertainties

ABSTRACT

Railways have been a critical catalyst for economic and social growth around the world. They have been developed

using local materials to effectively suit whole-life design, construction and maintenance. The choice of construction

materials often affect the life cycle performance and play a key role in resilience of rail assets and infrastructure in an

uncertain setting derived from geotechnical risks, operational changes, natural hazards and climate change effects.

Nowadays, in railway industry, various materials are being installed in railway tracks as supporting structure. Railway

sleepers or ties are an important element, which redistributes wheel load onto track foundation and importantly secures

rail gauge. Among them is manufactured by steel, timber, polymer, composite and concrete. The choice of these sleeper

materials is mainly arose from local suitability and compatibility in a specific railway network. This research is the

world first to investigate the georisks and potential consequences on track capacity and performance of railway systems

under climate uncertainties. It highlights track failure modes, short-term and long-term stability, and ground-borne

vibration, which causes excessive maintenance and service downtime. The insight into the influence of sleeper material

choice will help saving life cycle costs and reducing carbon footprint from repetitive track reconstruction activities.





Irbid - Jordan

Sponsors

PHYSICO-CHEMICAL AND MECHANICAL ASSESSMENT OF MORTARS WITH

LIME, METAKALIN AND NANO-TITANIA FOR RESTORATION APPLICATIONS

N. Maravelaki* K. Kapetanaki, C. Kapridaki, M. Stavroulaki, E. Gratsielou

Technical University of Crete, School of Architectural Engineering,

[email protected]

ABSTRACT

Hydraulic mortars with improved properties for the restoration of monuments and historic structures contain natural

and artificial pozzolanas mixed with hydrated lime. This work deals with the monitoring of the evolution of

carbonation, hydration and formation of hydraulic compounds of metakaolin-lime mortars mixed with crystalline nano-

titania (of anatase and rutile form) as additive. The mortars contained lime and metakaolin with two different kinds of

sands, one of carbonaceous nature and a river sand of siliceous nature. The concentration of the nano-titania is equal

to 6% w/w of binder. For comparison purposes, mortars without the addition of nano-titania were also studied. The

assessment of the carbonation and hydration procedures over a one-year curing period, carried out through Thermal

analysis (DTA-TG), Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD) analyses, evidenced that carbonation

and pozzolanic reaction were enhanced for nT photo-activated mortars. The photo-induced hydrophilicity of titania

has a clear effect on mechanical properties such as flexural and compressive strength, modulus of elasticity and

toughness revealed decreasing compressive resistance at early curing ages and plastic behaviour upon compression.

Increased resistance to compression was reinstated upon higher ageing times for nano-titania modified mortars,

highlighting that the ongoing pozzolanic reaction benefited from the nano-titania presence and imparted strength in

the long term.






Irbid - Jordan

Sponsors

IMPROVEMENT OF ADHESION BETWEEN AGGREGATES AND BITUMEN

Ahlem Loucif, Tarek Ninouh, Khalil Bouchouk

Civil Engineering Laboratory Applied (LGCA)

Department of Civil Engineering, University of Tebessa, Algeria

[email protected], [email protected] [email protected]

Keywords: adhesion, additive, aggregate, bitumen

ABSTRACT

Asphalt is a coating material commonly used in road infrastructures. It is constituted of a mineral skeleton in which

cohesion is ensured by a hydrocarbon binder. The appearance of the striping phenomenon which provoke the

progression of several degradations of the coatings is well known. These degradations mainly occur at the rolling

surface. A good bond between the aggregates and the bitumen in the layers of the pavement ensures the durability of

the road surface. However, there are aggregates extracted from eruptive and metamorphic rocks that cannot be used

in road construction because they have a low affinity with bitumen. The adhesion of granulate with binder may be

improved using several techniques. The scope of this research work is to study a technique to enhance the aggregate-

bitumen adhesion by modifying the binder characteristics with some additives through a series of tests on a number of

samples with different mixtures.






Irbid - Jordan

Sponsors

POLLUTION REDUCTION OF TIRES WASTE THROUGH INCORPORATION IN

THE BITUMEN TO FIGHT AGAINST PAVEMENT RUTTING

Khalil Bouchouk1, Tarek Ninouh1

1Department of Civil Engineering

University of Tebessa

Tebessa, 12002 road of Constantine, Algeria

E-mail: [email protected]

Keywords: Asphalt, Bitumen, Environment, Pavement, Pollution, Rutting.

ABSTRACT

The number of used tires is increasing every year by simply due to increased fleet. The problem of waste is a huge

problem both economically and ecologically. In Algeria, the valuation of waste tires in civil engineering is a main

consumer sector of used tires.

This study focuses on waste recycling of used tires in the road sector to reduce pollution due to the latter and

secondly to improve the characteristics of asphalt concrete to meet the sustainability criteria. For this we shall modify

the asphalt with rubber crumb. Different percentages of rubber crumb (RC) are added to the bitumen to evaluate their

influence on modified bitumen behavior. The experiments were performed on 35/50 grade bitumen. The results show

a significant improvement on the softening point (SP), penetration and thermal sensitivity (PI).





Irbid - Jordan

Sponsors

INCORPORATION OF GRAPHENE INTO GEOPOLYMERIC CEMENT:

FUNDAMENTALS OF CEMENT NANOCOMPOSITES MECHANISM AND

FUNCTIONS

M. Davoodabadi1

, J. Yang2

and Q. F. Liu3

1 PhD Candidate, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong

University, Shanghai 200240, China; e-mail: [email protected] 2 Professor, State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai

200240, China; e-mail: [email protected] 3 Assistant Professor, State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University,

Shanghai 200240, China; e-mail: [email protected]

Keywords: Graphene, Geopolymer, Morphology, Synthesis, Performance

ABSTRACT

The burgeoning demand for smart components, proportional to recently imposed environmental issues has opened

a new perspective toward the substitution of conventional portland cement with high-performance green materials,

geopolymers containing carbon nanocomposits. If appropriate criteria can be fulfilled, these materials will provide

outstanding performance and multifunctional characteristics. Modification of geopolymer characteristics with

graphene and fabrication of a well-adjusted flexible composite, however, have introduced nano-structural challenges

such as homogeneous dispersion of graphene flakes on polymer matrices, effective mixing of graphene with polymer

and controlling the folding and crumpling of graphene sheets. This paper, concisely summaries significant literature

of graphene and graphene-based polymers consisted of morphology, synthesis processes, chemical-physical-

mechanical properties, characterization, applications and versatility. In addition, considerable improvement in

controlling brittleness; toughness; and self sensing capability of graphene-based geopolymers have been concentrated

and prospective opportunities in innovate implementations of graphene nanocomposites as a media for greenhouse gas

storage will be briefly introduced.








Irbid - Jordan

Sponsors

DATA COLLECTION AND HARMONIZATION FOR SEISMIC HAZARD

EVALUATION OF THE WEST-BANK TERRITORIES

Data collection and harmonization for seismic hazard evaluation of the West - Bank territories

L. Danciu1

, G. R. Limon2

, I. Grigoratos3

, P. Ceresa4, R. Monteiro

5, and J. Al-Dabbeek

6

1Swiss Seismological Service, ETH Zurich, Sonneggstrasse 5, Zurich, 8092, Switzerland

[email protected] 2Understanding and Managing Extremes Graduate School, Piazza della Vittoria 15, Pavia, 27100, Italy

[email protected] 3School of Advanced Studies IUSS Pavia, Piazza della Vittoria 15, Pavia, 27100, Italy



[email protected] 6An-Najah National University, Nablus, Palestinian Territory

[email protected]

Keywords: seismic hazard, seismic moment, faults, earthquake catalogue

ABSTRACT

Earthquakes are highly catastrophic natural events, in terms of casualties and economic losses when they occur in

the proximity of densely populated urban areas. The resilience of any urban area begins with the understanding of the

earthquake threat. Evaluation of the seismic hazard is always the first step into that direction; that requires

incorporating all relevant datasets and applicable information on the geology seismology and tectonics. Generally,

earthquake catalogues are the prime data available, while geological information is often complementary used. Herein,

we summarize the process of collection, analysis and harmonization of earthquake related data for the West-Bank

territories in Palestine. Firstly, an earthquake catalogue is compiled from various sources and is harmonized in terms

of moment magnitude (Mw); it contains more than 14000 events, spanning a time-interval of 2050 years. Moreover,

active faults of the region were compiled from two main sources: the corresponding dataset compiled within the

Earthquake Model of the Middle East (EMME) Project and from peer-reviewed research manuscripts. Associated

uncertainties are quantified and embedded in the final dataset, which consists of seismically active faults, fully

parameterized, capable of generating moderate to large magnitude earthquakes. These datasets are the basis to forecast

the future seismicity within a probabilistic framework of seismic hazard and risk analysis of the West-Bank territories.

The contribution concludes with a comparison of earthquake rates forecast of the two datasets (i.e. earthquakes

catalogue and active faults). The present study is an extension of the activities of the SASPARM 2.0 EC-funded project

developed by the EUCENTRE Foundation, An-Najah National University and School of Advanced Studies IUSS

Pavia.











Irbid - Jordan

Sponsors

USE OF TUNED MASS DAMPERS TO CONTROL EXCESSIVE VIBRATIONS OF

PEDESTRIAN BRIDGES

Mohammad Alhassan1

and Dihong Shao2

1Department of Civil Engineering, Jordan University of Science and Technology, Irbid, Jordan

e-mail: [email protected] 2Principal, Structural Engineer (S.E.), Coffman Engineers Inc., Seattle, Washington


Keywords: Pedestrian Bridge, TMD, Vibrations, Dampers.

ABSTRACT

Pedestrian bridges of wide spans are often sensitive to vibrations causing discomfort to the pedestrian and in worst

cases may cause resonance and catastrophic failure. Pedestrian bridges with natural frequencies around 3 Hz may

experience such behavior. Synchronization is a very important factor in increasing the severity of loading, by which

people respond naturally to an oscillating bridge when it has frequencies close to their natural walking or running

frequencies.

Attempting to increase the natural frequency of a bridge beyond 3 Hz might not be possible or may require heavy

structural members way more than what is needed for strength and serviceability limit states. A more robust and

economical solution is to use tuned mass dampers (TMD) with natural frequencies tuned to the natural frequency of

the bridge. Therefore, if vibrations are excited in a bridge, the TMD also vibrates with a certain phase shift relative to

the bridge motion leading to a compensation of inertia loads, that in turn results in a fast decay in the bridge vibration.

This study summarizes the modal and time-history analyses conducted to control the vibrations of the pedestrian

bridge of Anacortes Terminal Building in Seattle, USA using TMDs. The structural members of the pedestrian bridge

were checked using ETABS and STAAD PRO models according to the applicable load combinations (dead load, live

load, seismic, and wind) according to the ASCE7, AISC, and IBC Codes (LRFD Approach). The performance of the

bridge was significantly improved with TMDs after exciting the bridge by simulated pedestrian activities.







Irbid - Jordan

Sponsors

SEISMIC DEMANDS ASSESSMENT OF TALL BUILDINGS

B. Chikh1, Y. Mehani1 and M. Hadid2

Earthquake Engineering Division, National Earthquake Engineering Research Center, Hussein Dey,

Algiers, e-mail: [email protected] ; web page: http://www.cgs-dz.org

2National School of Built and Ground Works Engineering, Kouba, Algiers, Algeria

e-mail: [email protected] ; web page: http://www.entp.edu.dz

Keywords: Inelastic response, spectra, ductility, tall building

ABSTRACT

Currently, in order to estimate the seismic demand of a nonlinear structure, some methods always require a

repeatedly iterative procedure no matter the elastic or inelastic response spectra was used in the procedure. Many

studies dealt with the development of different inelastic spectra with the aim to simplify the evaluation of inelastic

deformations and performance of structures. Recently, the concept of inelastic spectra has been adopted in the global

scheme of the performance-based seismic design through capacityspectrum methods. In this paper, an improved

procedure applicable to the analysis and design of tall buildings is presented and illustrated by examples. Also, it is a

new procedure for estimating the seismic deformation of Multi-Degree-of-Freedom systems. The accuracy of the

improved procedure is verified against the nonlinear time history analysis results of two tall buildings. The comparison

showed that the new method is capable to furnish accurate deformations and inter-story drifts.





Irbid - Jordan

Sponsors

OPTIMAL ASPECT RATIO FOR DIFFERENT TYPES OF BRACED DOMES

SUBJECTED TO GRAVITY LOADS

Ghazi Abu-Farsakh 1

, Nasser Al-Huthaifi2

1Civil Engineering Dep. JUST, Irbid, Jordan

e-mail: [email protected] 2Similarly for all remaining co-authors

Keywords: Braced-dome, aspect-ratio, linear-buckling, deflection, dome weight

ABSTRACT

Latticed structures are one of best structural systems used for roofing. Lightness, rigidity, strength, shape flexibility,

speed of construction, and economy were the main reasons behind the use of such systems in the last five decades.

Braced-domes were one of oldest types of latticed structures and were used to cover many structures all around the

world.

In this paper, two main geometrical parameters of domes were studied; topology of the dome and aspect-ratio. Four

different types of domes were studied using five different aspect-ratios for each type. SAP2000 was used to analysis a

total of 20 models. Models were mutually rigidly-connected while pin-supported at bottom ring and subjected to total

gravity loads of 120 kg/m2.

It was concluded from that Ribbed-dome had the minimum weight, but it had the lowest structural performance.

On the other hand, Schwedler-dome had the maximum weight with the best structural performance. The optimal value

of dome aspect-ratio (H/D) for all types was 0.25 as it resulted in maximum linear-buckling load with minimum

displacements and internal forces but with slight increase in total dome-weight.





Irbid - Jordan

Sponsors

INELASTIC RESPONSE AND SEISMIC DEMANDS ASSESSMENT OF BRIDGES

B. Chikh1, A. Zerzour2 and K. Abdallah3 1Earthquake Engineering Division, National Earthquake

Engineering

Research Center, Hussein Dey, Algiers, e-mail: [email protected] ; web page: http://www.cgs-

dz.org

2University of Science & Technology Houari Boumediene (USTHB), Faculty of Civil Engineering, BP

32, 16111 El-Alia / Bab Ezzouar, Algiers, Algeria

2Jordan University of Science and Technology (JUST), Faculty of Engineering, Irbid, Jordan

Keywords: Seismic isolation, seismic demand, inelastic, dynamic

ABSTRACT

Today, and as the system of seismic isolation of structures is known; it is possible that we can offer high security

and protection from damage to the structure during the earthquake than an embedded system. The technology of the

seismic isolation systems made it possible to convert weak and vulnerable bridges to resistant and insensitive ones to

earthquake by reducing the transfer of the effect of the ground motion to the bridges without interruption of its

functional operations. This work aims to clarify the nonlinear static behavior of the structures with and without the

isolation system and the influence of these systems on the fall in the seismic demand. The objective of the first stage

is to evaluate the seismic demands of concrete bridges without the isolation systems by the capacity spectrum method

inspired from ATC40 (approach in damping and ductility). The second stage is the same evaluation of the first stage

but with isolation systems, and comparative study was made to make it possible to quantify the influence of the

isolators on the seismic demands.





Irbid - Jordan

Sponsors

OPTIMAL DESIGN OF DOUBLE-SKIN ALUMINIUM FACADE SYSTEMS

Themistoklis N. Nikolaidis1

, Iosif Filosof2

, Charalampos C. Baniotopoulos3

1Institute of Metal Structures, Faculty of Engineering, Department of Civil Engineering,

Aristotle University of Thessaloniki, Thessaloniki, GR-54124, GREECE

e-mail: [email protected] ; web page:

http://www.civil.auth.gr/index.php?option=com_contact&task=view&contact_id=191&Itemid

2Institute of Metal Structures, Dept. of Civil Engineering, Faculty of Engineering

Aristotle University of Thessaloniki

Thessaloniki, GR-54124, Greece


3School of Civil Engineering, University of Birmingham

B15 255 Birmingham, United Kingdom

e-mail: [email protected]; web page: http://www.birmingham.ac.uk/schools/civil-

engineering/people

Keywords: Aluminum systems; Ventilated facades; Existing buildings; Optimal design; Sustainability

ABSTRACT

This paper focuses on the structural behavior and the optimal design of the new double-skin aluminium ventilated

façade system E2VENT, which will be connected on existing buildings in order to enhance their energy performance.

The double-skin façade systems are nowadays extensively used in modern construction due to the fact that they can be

manufactured as building façades to possess all those high efficiency properties prescribed by the designer; among

these properties predominant role play the safety of the supporting and anchoring system, the high strength-to-self-

weight ratio, and the serviceability requirements of structural members.

From a structural engineering standpoint, although usually the double-skin façade systems are considered as

secondary structural systems, their structural performance has to be meticulously analyzed and designed to fulfill

modern structural codes requirements because they are in most cases subjected to strong environmental actions.

The structural response of a façade systems subjected to normative load combinations is numerically investigated

within the Eurocodes framework. In addition, an optimal structural design of the supporting aluminium system is carried

out by applying advanced finite element analysis schemes and taking into account structural design principal criteria.

The proposed optimal structural design approach leads to useful conclusive remarks for the selection of the basic

structural members as well as the anchor details with reference to the dominating actions being the wind and the

earthquake action. The proposed methodology is illustrated by means of a numerical application on a typical building

façade case study.


http://www.civil.auth.gr/index.php?option=com_contact&task=view&contact_id=191&Itemid







Irbid - Jordan

Sponsors

CONVERTING LOW-GRADE SOLID WASTES INTO USEFUL PRODUCTS

Munther Kandah,1

, Fahmi Abu Al-Rub2 and Dalia Al-Sareef3

1,2,3Chemical Engineering Department

Jordan University of Science & Technology

B.O. Box 3030 Irbid, 22110 Jordan

e-mail: [email protected] ; web page: http://www.edu.jo/cesare17

Keywords: Adsorption, Low-Grade Phosphate, Immobilization, Cobalt, Heavy metals

ABSTRACT

Utilization of solid wastes attracts the researcher’s attention because it solves the environmental pollution problems,

save the disposal costs and produce useful products that can generate profit. In this project, low-grade phosphates

waste and immobilized low-grade phosphates particles were used to remove cobalt heavy metal from waste water

effluent. The effect of pH, time, adsorption amount, concentration of cobalt, and particle size were investigated for

both adsorbents. This study showed that the JLGP has high adsorption capacity towards the removal of cobalt ions

from aqueous solutions. Results showed that the adsorption of cobalt ions onto JLGP increased as the amount of

adsorbent, the surface area, the equilibrium PH and the ion concentration increase. On the other hand, results showed

that the adsorption of immobilized low-grade phosphate waste was more efficient than that for non-immobilized waste.


http://www.edu.jo/cesare17





Irbid - Jordan

Sponsors

EVALUATING THE PERFORMANCE OF GEOSYNTHETIC REINFORCED SOIL

INTEGRATED BRIDGE SYSTEM (GRS-IBS)

Murad Abu-Farsakh1

, Milad Saghebfar2

, Allam Ardah2

, and Qiming Chen2

1Louisiana Transportation Research Center, Louisiana State University, Baton Rouge, LA, USA,

e-mail: [email protected]. 2Louisiana Transportation Research Center, Louisiana State University, Baton Rouge, LA, USA.

Keywords: Geosynthetics, Reinforced soil, GRS-IBS, Instrumentation, Monitoring, Abutment.

ABSTRACT

This paper presents the results of static (truck) load tests that were conducted to evaluate the performance of a

geosynthetic reinforced integrated bridge system (GRS-IBS) in Louisiana. A total of 16 load cases were conducted

using two fully-loaded trucks on instrumented GRS-IBS at Maree Michel bridge. The bridge was surcharge loaded to

stress levels well in excess of working load conditions. In order to evaluate the performance of the GRS-IBS abutment

under different load tests, various types of instrumentations were installed including shape accelerated arrays, pressure

cells, stain gauges, piezometers, and thermocouples. The primary measurements were the horizontal deformations near

the front wall, vertical deformation of GRS abutment, distribution of stresses in the GRS abutments and below the

reinforced soil foundation, and the distribution of strains along the geosynthetic reinforcements. Measurements from

the instrumentations provide valuable information to verify important design factors and parameters for GRS-IBS

abutment. The bridge settlement and facing wall lateral movement were within the serviceability level demonstrating

an excellent load carrying capacity of the GRS abutment. The results of strain measurements for the surcharge load

indicated that the reinforcement strains at the top layers in some cases, are slightly higher than the maximum strain

specified by the FHWA. The locus of maximum strains in the abutment varied by the surcharge load and that did not

correspond to the (45+ϕ/2) line, especially when the surcharge load was placed at the bridge. In general, the results of

the load test revealed that the GRS-IBS bridge responses to the load tests were well within the serviceability limits,

and the overall performance of the GRS-IBS was within acceptable tolerance in terms of measured strains, stresses,

settlements and deformations.






Irbid - Jordan

Sponsors

ESTIMATING THE INCREASE IN PILE RESISTANCE WITH TIME (OR SETUP)

BASED ON SOIL PROPERTIES

Murad Abu-Farsakh1

and Md. Nafiul Haque2

1Louisiana Transportation Research Center, Louisiana State University, Baton Rouge, LA, USA,

e-mail: [email protected]. 2Louisiana Transportation Research Center, Louisiana State University, Baton Rouge, LA, USA.

Keywords: Soil set-up, Static load test, Dynamic load test, Empirical model, Consolidation.

ABSTRACT

This paper presents the analyses of twelve prestressed concrete (PSC) instrumented test piles that were driven in

different locations of Louisiana to develop analytical models to estimate the increase in pile resistance (soil set-up)

with time. The twelve test piles were driven mainly in cohesive soils. Detailed soil characterizations including

laboratory and in-situ tests were conducted to determine the different soil properties. The test piles were instrumented

with vibrating wire strain gauges, piezometers and pressure cells. Several static load tests (SLT) and dynamic load

tests (DLT) were conducted on each test pile at different times after end of driving (EOD) to quantify the magnitude

and rate of set-up. Measurements of load tests confirmed that pile resistance increases almost linearly with the

logarithm of time elapsed after EOD. Case Pile Wave Analysis Program (CAPWAP®) were performed on the restrikes

data and were used along with the load distribution plots from the SLTs to evaluate the increase of shaft resistance of

individual soil layers along the piles. The logarithmic set-up parameter “A” for unit shaft resistance was calculated for

70 individual clayey soil layers, and the database set of A was correlated with different soil properties. Nonlinear

multivariable regression analyses were performed between A and different soil properties, and three different empirical

models are proposed to predict the soil set-up parameter “A” as a function of soil properties.






Irbid - Jordan

Sponsors

DEVELOPMENT OF THREE DIMENSIONAL GROUNDWATER MODEL FOR AL-

CORIDOOR WELL-FIELD IN JORDAN

DEVELOPMENT OF THREE DIMENSIONAL GROUNDWATER MODEL FOR AL-CORIDOOR WELL -FIELD

IN JORDAN

M.Shawaqfah 1, R. Hatamleh2, I.Alqdah 3, and A.Adaileh4


University of Al al-Bayt University

Mafraq, 25113, Jordan

e-mail: [email protected],jo; web page: http://www.aabu.edu.jo


Yarmouk University

Irbid, 21163, Jordan

e-mail: [email protected]; web Page: https://www.yu.edu.jo

3Jordan Engineer Association

Mafraq, 25113, Jordan


4Department of Civil and Environmental Engineering

Mutah University

Karak,61710 , Jordan

e-mail: [email protected] ; web page: http://www.mutah.edu.jo

ABSTRACT

Coridoor area (400 km2) lies to the north – east of Amman (60 km). It lies between 285-305 E longitude and 165-

185 N latitude (according to Palestine Grid). It been subjected to exploitation of groundwater from new eleven wells

since the 1999 with a total discharge of 11 MCM in addition to the previous discharge rate from the well field 14.7

MCM. Consequently, the aquifer balance is disturbed and a major decline in water level. Therefore, suitable

groundwater resources management is required to overcome the problems of over pumping and its effect on

groundwater quality.

Three–dimensional groundwater flow model Processing Modflow for Windows Pro (PMWIN PRO, 2003) has been

used in order to calculate the groundwater budget, aquifer characteristics, and to predict the aquifer response under

different stresses for the next 20 years (2035).

The model was calibrated for steady state conditions by trial and error calibration. The calibration was performed

by matching observed and calculated initial heads for year 2001. Drawdown data for period 2001-2010 were used to

calibrate transient model by matching calculated with observed one, after that, the transient model was validated by

using the drawdown data for the period 2011-2014. The hydraulic conductivities of the Basalt- A7/B2 aquifer system

are ranging between 1.0 and 8.0 m/day. The low conductivity value was found at the north-west and south-western

parts of the study area, the high conductivity value was found at north-western corner of the study area and the average

storage coefficient is about 0.025. The water balance for the Basalt and B2/A7 formation at steady state condition

with a discrepancy of 0.003%. The major inflows come from Jebal Al Arab through the basalt and through the

limestone aquifer (B2/A7 12.28 MCMY aquifer and from excess rainfall is about 0.68 MCMY. While the major

mailto:[email protected],jo

http://www.aabu.edu.jo/


https://www.yu.edu.jo/







Irbid - Jordan

Sponsors

outflows from the Basalt-B2/A7 aquifer system are toward Azraq basin with about 5.03 MCMY and leakage to A1/6

aquitard with 7.89 MCMY.

Four scenarios have been performed to predict aquifer system responses under different conditions. Scenario no.2

was found to be the best one which indicate that the reduction the abstraction rates by 50% of current withdrawal rate

(25.08 MCMY) to 12.54 MCMY. The maximum drawdowns were decreased to reach about, 7.67 and 8.38m in the

years 2025 and 2035 respectively.





Irbid - Jordan

Sponsors

FRAGOKASTELLO SFAKIA: RESTORATION AND CONSERVATION THROUGH

COMPATIBLE ARCHITECTURAL, STRUCTURAL AND CONSTRUCTION

MATERIALS

Stavroulaki Maria1, Skoutelis Nikos1, Maravelaki Noni-Pagona1, Drosopoulos Georgios2 and Stavroulakis

Georgios3

1School of Architecture / Technical University of Crete, GR-73100 Chania, GREECE

e-mail: [email protected] , [email protected], [email protected] ; web page:

http://www.arch.tuc.gr/stavroulaki_en.html , /skoutelis_en.html , http://www.elci.tuc.gr/noni/

2School of Civil Engineering /University of KwaZulu-Natal, Durban 4041, SOUTH AFRICA


3 School of Production Engineering and Managment / Technical University of Crete, GR-73100 Chania,

Crete, GREECE

e-mail: [email protected] ; web page: www.comeco.tuc.gr

Keywords: Restoration, Conservation, Monuments

ABSTRACT

Castello San Nikita, called Frangokàstello, which was built by the Venetian authorities, between 1371-1374 in

southeaster Crete, today is presented in a great decay state. The principles of restoration and conservation and the

requirement of compatibility between original materials and inner structure, as well as technical solutions for the

restoration and conservation are the subject of this study.

In the architectural interventions, the values that time has incorporated on the towers and the walls, in correlation

with value as symbol of freedom and independency, has been considered as main criteria to work with. Emphasis was

given on the analysis of original plasters before the design of the conservation mortars, compatible to the original ones

and paying particular attention to enhance their resistance to the environmental loading. The structural behaviour of

the masonry castle, were studied by the finite element method, taking into account the pathology of the structure which

affects its mechanical response and finally the required actions for the reinforcement of the structure.





Irbid - Jordan

Sponsors

PREDICTING CONTOUR SLUMP FLOW OF SELF-COMPACTING CONCRETE

USING BENTONITE AS FILLER

Arabi N. S. Al Qadi1


Ajloun National University

Ajloun B.o.x 43, 26810 Jordan

E-mail: [email protected]; [email protected]

KEYWORDS: Box-Benken method; Bentonite; Self-compacting concrete; Contour slump flow.

ABSTRACT

This research presents the application of the Box-Benken design method to develop a model for predicting contour

slump flow and its desirability in self-compacting concrete (SCC) with partial replacement of cement with bentonite.

The slump flow has been measured for 15 mixtures prepared at the laboratories of Al Hussien Bin Talal University

and Ajloun National University. The use of Bentonite as filler materials in self-compacting concrete can add many

benefits that are directly related to the workability and consistency of various cementitious materials, besides the fact

that it is possible to reduce the quantities of cement and optimize the percentage in the composite. The performance of

the model can be judged by the Correlation Coefficient (R2), Mean Absolute Error (MAE) and Root Mean Square

Error (MSE) which have been adopted as the comparative measures against the experimental results obtained from the

mixtures, and found the best percentage of Bentonite in SCC.







Irbid - Jordan

Sponsors

PART III

Sustainable Energy and

Resilience





Irbid - Jordan

Sponsors

GROUND SOURCE HEAT PUMP SYSTEMS AND PUMP EXCHANGER SYSTEMS IN

JORDAN

Dr. Bilal Yasin1, Dr. Abdallah S. Alkhawaldeh2

1Civil Engineering Department, Collage of Engineering, Al al-Bayt University, Mafraq, Jordan 2 Renewable Energy Engineering Department, Collage of Engineering, Isra University, Amman, Jordan


Keywords: Renewable, Ground Source , Heat Pump, Exchanger System, Ground Loop

ABSTRACT

This paper aims to study the potential of renewable energy sources systems in Jordan by analyzing the use of the

Ground Source Heat Pump Exchanger Systems. The paper discusses appropriate design and relates issues. Our focus,

in this study, is the Shallow Geothermal Systems, depending on the ground loop that exchanges heat with the earth

using the interior heat pump units that transfer heat between the ground loop and the conditioned spaces of a building.

How quickly the system costs pay off depends in part on each system’s heating and cooling requirement, that’s means

that unlike drilling for shale oil, geothermal energy is considered to be one of the cleanest, most efficient and safest

forms of renewable energy.

The American University of Madaba in Jordan, owned by the Latin Patriarchate of Jerusalem and blessed by the

Pope, has installed about 1.4MW for heating and about 1.7MW for cooling system. The system comprises a unit for

the College of Science Building (A) and the college of Business Building (B).





Irbid - Jordan

Sponsors

NUMERICAL INVESTIGATION OF THE ENHANCED PERFORMANCE OF SOLAR

PONDS USING NANOPARTICLES

A. Anagnostopoulos1

Department of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, 1

University of Surrey, GU2 7XH, UK


Keywords: Renewable Energy, Energy Storage, Nanoparticles, Solar Pond

ABSTRACT

A series of numerical models was developed in order to predict and investigate the thermal performance of a

Salinity Gradient Solar Pond (SGSP). A 1-D simplified model using non-linear first order differential equations was

developed in MATLAB and a more elaborated 2D and 3D finite element model was developed in COMSOL

Multiphysics, based on a set of Partial Differential Equations, which govern the phenomena of heat transfer and

radiation in semi-transparent media.

The developed models were compared in terms of their accordance with published experimental data sets from two

different test sites. The 3D model was proven to be the most accurate (7%) with the 1D model being the least (13%).

The potential enhancement of the thermal performance of a SGSP by adding nanoparticles in the Lower Convective

Zone (LCZ) was investigated numerically. The existence of the nanoparticles was simulated taking into account their

thermal and optical properties. The 3D model showed an average temperature increase of 20% in its LCZ, whereas the

2D presented a temperature increase of 19%.The 1D model showed the least improvement (15%). This was attributed

to the ability of the 2D and 3D models to account for the optical properties of the suspended nanoparticles.






Irbid - Jordan

Sponsors

WIND EFFECTS ON ROOF-MOUNTED SOLAR PANELS

Hatem Alrawashdeh1and Ted Stathopoulos2

1Ph.D. Student (Building Civil and Environmental Engineering, Concordia University, Canada)


2Professor (Building Civil and Environmental Engineering, Concordia University, Canada)


Keywords: sustainability, solar panels, design loads, wind pressures, wind tunnel

ABSTRACT

Impressive global attitudes towards reducing the pressure on current non-renewable energy sources like carbon-

producing fuel sources (coal and oil) have recently progressed toward sustainable and clean energy supply. Solar

power, arguably the most accessible and prevalent application for renewable energy, becomes the focus of the world

attention resulting in rapid applications of photovoltaic solar panels of various utility scale systems throughout the

world. In particular, roof-mounted solar panels are used increasingly for commercial, industrial and residential

applications. This paper presents a comparative study of wind loads

On roof-mounted solar panels aiming to comprehend available findings and results obtained by means of

atmospheric boundary layer wind tunnel studies. The main goal of this study is to create an opportunity to become

familiar with the obstacles that hinder the reliable evaluation of wind loads on solar panels. These are lightweight

structures and wind pressures on their surfaces may be critical and may affect their structural integrity. Suitable design

guidelines are important for both manufacturers and designers to increase the solar panel’s safety and reliability, which

in turn may reduce the cost of financing for the installation of solar panels. In spite of the amount of research that has

been conducted in an attempt to create code/standard provisions suitable for design of solar panels on building roofs,

wind codes and standards provide emerging guidelines for limited geometries and configurations. Vast discrepancies

were found within the range of available results and more forward-looking parametric studies will be indispensable to

yield credible results for sustainable design and codification purposes.






Irbid - Jordan

Sponsors

IMPROVING SUSTAINABILITY AND RESILIENCE OF FUTURE CITIES.

POSITIONING OF WIND TURBINES WITHIN THE URBAN ENVIRONMENT

G. Vita1*

, H. Hemida1

and C. Baniotopoulos1

1Department of Civil Engineering, School of Engineering, University of Birmingham

Edgbaston, Birmingham, B15 2TT, United Kingdom

e-mail: [email protected] ; web page: http://www.birmingham.ac.uk/

Keywords: Urban Wind Energy, Positioning, Social Acceptance

ABSTRACT

Wind Energy technology represents the most technically advanced and diffused renewable resource [1]. The

willingness to foster its economical profitability has brought to new uses of the technology, especially in

unconventional locations. In particular, the Urban environment is promising in reducing the costs associated e.g. to the

large infrastructure wind farms require [2]. However, several technical issues remain unsolved, spacing from the

understanding of the actual wind resource available to the related response of wind turbines. This contributes to foment

the lack of confidence in wind energy and its societal acceptance. An issue that adds sharply to NIMBYism rhetoric

mechanisms [3].

In this work, various possibilities and limits of Urban Wind Energy are introduced, with a focus on the urban wind

resource. A suitable urban street-canyon/high-rise building configuration is simulated using CFD [4], to investigate

possible strategies in optimising the positioning of wind turbines and their relationship with the built environment [5].

The challenges related to such a methodology are also introduced, with special reference to the necessity of considering

the actual signature turbulence for the aerodynamic design of the new generation of small and medium size wind

turbines.


http://www.birmingham.ac.uk/

CESARE'17 International Conference "Coordinaing Engineering For Sustainability and Resilience"

Dead Seas – Jordan. 3 – 8 May 2017


Sponsors

AN INVESTIGATION ON VIRTUAL OUTPUT IMPEDANCE PROFILE FOR WIND TURBINES BASED SYSTEMS

Khaled Mohammad Alawasa

Department of Electrical Engineering

Mu'tah University

Alkarak, Jordan

[email protected], [email protected]

Index Terms— Doubly-fed induction generator, Full-scale wind turbine, grid interaction, Virtual out impedance,

Voltage source converters.

ABSTRACT

Voltage sourced converters (VSCs) are becoming an attractive solution in integrating renewable resources into the electrical

networks. With unique converter and its dynamics performance the stability of the conventional power system with new power

electronics system has taken a new form of stability. As a consequence, integrating VSC-based systems may pose various challenges

into electrical networks. With expected high penetration level of VSC-based systems, the dynamic interactions and stability

assessments of modern VSCs and conventional power systems has become important topics in the current research.

The grid interaction with Voltage sourced converters (VSCs), it dedicate by it virtual converter output impedance. The virtual-

impedance concept provides insight and characterizes the influence of whole VSC system; active and passive elements, Converter

configurations and topologies, converter controllers and its parameters on the VSC interaction with grid

In this paper, an investigation on the profiles and characteristics of output impedance of most commonly used wind turbines,

namely: doubly-fed induction generator (DFIG) and Full-scale wind turbine (FSWT) has been carried out. The key differences and

the impact of several factors on the impedance profile have been identified; the developed virtual impedance profile in term the

virtual resistance and reactance have been used for stability and grid dynamics assessment




Sponsors

A REVIEW ON EXPERIMENTAL FATIGUE ANALYSIS OF TUBULAR JOINTS FOR

OFFSHORE WIND TURBINES

Gonçalo T. Ferraz1, Ana Glišić2

1 Institute for Steel Construction, Leibniz Universitaet Hannover, Appelstr. 9a, 30167 Hannover, Germany.

e-mail: [email protected] ; web page: https://www.stahlbau.uni-hannover.de/

2 Institute for Steel Construction, Leibniz Universitaet Hannover, Appelstr. 9a, 30167 Hannover, Germany.

e-mail: [email protected] ; web page: https://www.stahlbau.uni-hannover.de/

Keywords: Fatigue, Experimental, Tubular Joints, Offshore Wind Turbines

ABSTRACT

The scientific community is devoting more attention to the wide scope of offshore wind turbine structures. Since such

structures are subjected to high level of fatigue loads as well as a large number of load cycles caused by wind, waves and turbine

operation, the fatigue performance of welded connections is usually a design driving criteria.

In this paper, a brief review on experimental fatigue analysis of tubular joints of jacket structures is presented. Special

emphasis is given to full-scale experimental testing on scope of offshore wind turbines. In order to face some of the challenges in

this area of expertise, an experimental research plan within the framework of the Innovative Training Network (ITN)

AEOLUS4FUTURE is introduced, aiming to understand and validate the fatigue performance of tubular joints produced by an

automated process, using Tandem MIG/MAG welding.

https://www.stahlbau.uni-hannover.de/




Sponsors

WIND INDUCED FATIGUE IN TUBULAR STEEL WIND TURBINE TOWER WELDED JOINTS

Nafsika Stavridou1

, Evangelos Efthymiou1

and Charalampos C. Baniotopoulos2


Aristotle University of Thessaloniki

Thessaloniki, GR-54124, Greece

e-mail: [email protected] , e-mail: [email protected] , 2School of Civil Engineering

University of Birmingham

Birmingham, B15 2TT, United Kingdom

e-mail: [email protected] ; web page: http://ccb.civil.auth.gr/

Keywords: wind turbine tower, fatigue analysis, welds, steel structures

ABSTRACT

The constantly increasing need for sustainable energy production, leads to the construction of taller tubular steel wind turbine

towers, which are the commonest tower configuration. Recent catastrophic tower accidents, due to fatigue loading, challenge the

engineering community towards more durable structures with minimized material consumption. The towers are designed to

withstand a complex loading field; but cases of recent tower collapses happening in normal wind conditions and with shell stresses

still in the elastic range, highlight the importance of fatigue phenomena and their consequences on the tower joints. The fabrication

and mounting procedures applied for the construction of tubular steel wind turbine towers need the realization of four types of

welded joints. The four types of welded joints are: the circumferential welds between the subsequent tower parts, the longitudinal

welds between the tower parts, the circumferential welds between the shell and the stiffening rings and the circumferential welds

between the tower shell and the bottom flange. In order to assess the efficiency of such connections towards fatigue loading, two

towers of identical height and variable shell thickness are compared. The calculation methodology applied is the damage

accumulation method used for the fatigue life calculation of the structure, and important results on the importance of the tower

joints on the overall tower behavior are derived.




http://ccb.civil.auth.gr/




Sponsors

WIND TURBINE LOAD SIMULATIONS USING TWO DIFFERENT SERVO-HYDRO-

AEROELASTIC SOFTWARE CODES

Mohammad Reza Shah Mohammadi1

, Paul Thomassen2

and Carlos Rebelo 3

1 ISISE, Department of Civil Engineering, University of Coimbra, P-3004 516, Coimbra, Portugal, [email protected] 2 Simis AS, Leonardvegen 3, 7790 Malm, Norway, [email protected]

3 ISISE, Department of Civil Engineering, University of Coimbra, P-3004 516, Coimbra, Portugal, [email protected]

Keywords: Wind Turbine, Aeroelastic Simulation, Code Assessment

ABSTRACT

In this paper, the exemplary results of the comparison between FAST [1] and ASHES [2] software used to perform servo-hydro-

aeroelastic simulations are presented. The focus of this paper has been the assessment of wind turbine modeling codes through code-

to-code comparisons. The lack of similarities between the results will be shown and the sources of the differences will be discussed.

The aerodynamic load calculation in the form of internal cross-section forces along the blades and the tower will be investigated.

Moreover, the dynamic response of the structure is obtained in the simulation results and the tower-blade tip clearance will be

certified. Furthermore, attention is given to the generator model, outputs and the pitch control system. The comparison will be done

based on IEC 61400-1 [3] design load cases for operation and idling conditions. Finally, recommendations concerning the modeling

of the wind turbine with the servo-hydro-aeroelastic simulation tools will be given.




Sponsors

INVERSE WIND LOAD RECONSTRUCTION WITH APPLICATION TO WIND TURBINE

STRUCTURES

Mirjana Ratkovac1

, Rüdiger Höffer2

1Doctoral researcher, Wind Engineering and Flow Mechanics, Ruhr-Universität Bochum, Universitätsstraße 150,

44801 Bochum, Germany

e-mail: [email protected] 2Professor, Wind Engineering and Flow Mechanics, Ruhr-Universität Bochum, Universitätsstraße 150, 44801

Bochum, Germany


Keywords: Renewable energy, Wind turbines, Inverse wind load identification

ABSTRACT

With growing demands for clean energy, wind turbines play a significant role as a renewable energy source. In order to reduce

the general costs of wind turbine structures, it is very useful to get a better knowledge on wind load time histories acting on the

structure in order to reduce design uncertainties. This knowledge can also be used to utilize fatigue assessment procedures, damage

diagnosis and life-time forecast. Since the wind load in most cases cannot be measured directly, a possible alternative is to inversely

identify the wind load using structural response measurements gained through structural health monitoring. In the past, many authors

dealt with inverse load reconstruction using different approaches, but not much research has been done in the field of wind load

identification for wind turbine structures. This paper gives an overview of methodologies that can be used to reconstruct the wind

load, as well as their applicability for a more precise design of land-based wind turbines.






Sponsors

STOHASTIC VARIABLES IN MODELLING OF THE WAVE LOADS ON OFFSHORE WIND

TURBINE STRUCTURES

Ana Glišić1

, Gonçalo T. Ferraz 2

1 Institute for Steel Construction, Leibniz Universitaet Hannover, Appelstr. 9a, 30167 Hannover, Germany

e-mail: [email protected]; web page: https://www.stahlbau.uni-hannover.de/ 2 Institute for Steel Construction, Leibniz Universitaet Hannover, Appelstr. 9a, 30167 Hannover, Germany

e-mail: [email protected]; web page: https://www.stahlbau.uni-hannover.de/

Keywords: Stochastic process, Wave load, Load modelling, Offshore Wind Turbines

ABSTRACT

Nowadays, with respect to trend of Kyoto protocol, many producers turn to renewable energy resources. That leads to a fact that

more than 75% of new power capacity installations in EU in the year 2015 are renewables. The leading among the new renewable

energy resources is wind energy. In the last decades, even more wind energy is accommodated by moving offshore. That brings up

a problem of more complicated design, which includes new loads to be investigated and modelled. For offshore wind turbines,

dominant loads are wind and wave loads. For the substructure itself, the highest impacts have wave-induced loads, as it is submerged

at most of its height. As the waves are stochastic and irregular loads, in this paper it is investigated which is the best method to

model the wave loads in order to achieve a very realistic load model and results. This is only some of the numerous challenges in

this area of expertise, which are more accurately investigated in a research plan within the framework of the Innovative Training

Network (ITN) AEOLUS4FUTURE, related to reliability of offshore wind energy structures.








Sponsors

PRELIMINARY EXPERIMENTAL AND NUMERICAL INVESTIGATION ON DYNAMIC

PROPERTIES OF SANDWICH-TYPE SHELLS FOR WIND TURBINE TOWERS

Stylianos M. Vernardos1

, Charis J. Gantes1

, Efstratios G. Badogiannis1

, Harris P. Mouzakis1

and Xenofon A. Lignos1

1School of Civil Engineering, National Technical University of Athens, Zografou Campus, Heroon Polytechniou 9,

15780 Zografou, Greece


Keywords: Wind Turbine Tower, Sandwich Section, Experimental Investigation, Dynamic Analysis

ABSTRACT

Increased height of modern wind turbines encumbers the lower segments of their towers with larger loads and dictates the

expansion of tower-base diameters beyond the limits imposed by today’s means of transportation. This issue is addressed herein by

substituting conventional steel tower sections with sandwich-type ones, consisting of two steel faces and a cement-mortar core. This

geometry is expected to enhance the stiffness and load capacity of the section with minimal weight and cost addition.

Taking into account the dynamic nature of wind loads, determination of the concept’s dynamic properties is realized through

modal analysis of a scaled, FE, sandwich-tower model. An experimental investigation subsequently takes place for calibration,

involving two similarly scaled sandwich tower specimens, constructed for this purpose and subjected to impact testing. Calibration

is followed by exposal of the FE tower model to dynamic loading, by simulated wind-force time histories taking into account wind-

tower interaction. With obtained response being the principal criterion, optimal geometry is finally sought-after as far as dynamic

behavior is concerned.





Sponsors

AN OPTIMISATION DESIGN APPROACH TO THE DESIGN OF

HYBRID LATTICE-TUBULAR WIND TURBINE TOWERS

Efthymios Koltsakis1, Panagiotis Manoleas2 and Ove

Lagerqvist3

1,2,3 Structural and Fire Engineering, Department of Civil, Environmental and Natural Resources

Engineering, Luleه Technical University, Sweden

1e-mail: [email protected]

2e-mail: panagiotis.manoleas @ltu.se

3e-mail: [email protected]

web page: http://www .ltu.se

Keywords: structural optimisation, structural design, lattice structures, wind towers

ABSTRACT

This paper addresses the issue of minimal weight design of the lattice part of hybrid (lattice lower part -tubular top part) towers

that support wind turbines. This hybrid approach is an emerging technology and intends to address tower heights in the range of

150m - 250m. The combination of the two structural types is particularly interesting for a number of reasons. First the transportation

constrain: aiming for taller towers requires larger diameters and tubes wider than 4.5m are very difficult to transport. Second, the

possibility to hoist the tube to its final position using the lower lattice part as a supporting structure. The latter is the subject of the

RFCS-SHOWTIME project where the authors participate.




Sponsors

RESILIENCE STUDE OF AASHTO DRAG FORCE COEFFICIENTS USING FINITE ELEMENT

METHOD

Amin H. Almasri1 and Shadi Moqbel2

1Associate Professor, Civil Engineering Department, Jordan University of Science and Technology, Irbid, 22110,

Jordan. e-mail: [email protected]. 1Associate Professor, Civil Engineering Department, Fahad Bin Sultan University, Tabuk, Saudi Arabia. e-mail:

[email protected] 2Assistant professor, Civil Engineering Department, The University of Jordan, Amman, Jordan.


Keywords: Drag coefficient, Finite element method, AASHTO

ABSTRACT

Drag force is usually exerted on bridge piers due to running river water. This force is calculated empirically based on drag

coefficients stated in design codes and specifications. Different values of drag coefficients have been reported in literature. For

example, AASHTO LRFD Bridge Design Specifications uses a drag coefficient of 1.4 and 0.7 for square-ended and semicircular-

nosed pier, respectively, while Coastal Construction Manual (FEMA P-55) recommends a value of 2 and 1.2 for square and round

piles, respectively. In addition, many researchers have obtained other different values of drag coefficient under similar conditions

(i.e. similar range of Reynolds number) reaching to 2.6 for square object. The present study investigates the drag coefficient of flow

around square, semicircular-nosed, and 90o wedged-nosed and circular piers numerically using finite element method. Results

showed that AASHTO values for drag force coefficient varied between very conservative to be under-reckoning. The study

recommends that AASHTO drag coefficient values should be revised for different circumstances and under more severe conditions.







Sponsors

SWITCHING CHARASTRISTICS OF IGBT AS THE INITIAL FAILURE INDICATOR OF THE

WIND TURBINE CONVERTERS

R. Moeini1, P. Tricoli2, H. Hamida3 and C. Baniotopoulos4

1 (School of Engineering, University of Birmingham, B15 2TT, Birmingham , UK)

e-mail: [email protected] ; web page: https://ir.linkedin.com/in/rana-moeini-93529088

Keywords: Relability, Insulated Gate BipolarTransistor (IGBT), Wind Turbine, Failure Mechanism

ABSTRACT

High power insulated gate bipolar transistor (IGBT) modules are widely used in the power electronics converter of wind turbines.

However, it is difficult to estimate correctly their reliability, as it is dependent on variable operating conditions that cause mismatch

between the thermal expansions of the different layers of the device, especially between the silicon semiconductor chip module of

aluminum bond wire[1]. Bond wire lift-off and solder fatigue are the most common degradation causes of IGBT modules for wind

turbine applications[2]. These degradations may significantly affect the temperature distribution within the IGBT modules and lead

to early failures of the modules. Temperature response is fairly slow and, hence, temperature monitoring is not recommended in

monitoring the state of health of IGBT modules for variable and unpredictable loads like those of wind turbines. The perpose of this

paper is to study the influence of bond-wire lift off and solder fatigue on the switching charastristics of IGBT modules, in particular

the turn-on and turn-off delay times, the turn-on and turn-off times for different values of the dc-bus voltages and different load

currents. Bond wire lift-off is manually imposed to the module by physically lifting off some of the bond wires. On the other hand,

solder fatigue is modeled by changing the heat sink of module, as solder fatigue affects the thermal coupling between the die and

the contact pad, introducing voids between the layers and reducesthe effectiveness of the power transfer from the die to the heatsink.

The effects of these faults on the switching

charastristics of the IGBT module are discussed in details by comparing the experimental results of healthy and damaged modules.

https://ir.linkedin.com/in/rana-moeini-93529088




Sponsors

STUDYING THE IMPACT OF PHOTOVOLTAIC PENETRATION FACTOR ON THE JORDANIAN

POWER SYSTEM

Saher Albatran1, Ahmad Allabadi1, Nedal Al-Ababneh1

Department of Electrical Engineering, Jordan University of Science and Technology

[email protected] ; [email protected]; [email protected];;

Keywords: penetration factor, power system stability, renewable energy, solar power

In Hashemite Kingdom of Jordan, 97% of its energy is imported. This is a critical point and represents a

significant challenge to Jordan Economy. This problem can grow with the international increase and

fluctuation in the oil price. One of the actions to tackle this curtail issue is to relay on secure local renewable

energy resources.

Replacing conventional energy resources with clean and sustained resources is one of the biggest

improvements to the power systems. Thermal power plants are not preferred due to many reasons including

the shortage of its resources, environmental side effects and the global warning. However, these traditional

generation units are essential to stabilize the power system and keep the system robust. On the other side,

renewable energy resources are relatively environmental friendly but it may degrade power system stability.

In 2015, renewable energy resources contributed by only 0.8% of the total generated and imported energy

(19615 GWh) in Jordan. In 2016, a huge number of photovoltaic (PV) projects were built and this percentage

will significantly increase. One of these leading project is Shams Maan with a 52.5 MW capacity which

represents around 1% of the total energy production.

In this work, the impact of integrating such projects in the Jordanian power system will be studied and

analyzed. Besides that, the impact of integrating some of the other solar projects will be highlighted. In

general, the impact of PV penetration factor on the Jordanian power system will be analyzed and some other

transmission and voltage profile problems will also be highlighted. In fact, solar projects will replace part of

the thermal power plants based on the penetration factor of the photovoltaic power integration at the utility

and the distribution levels. Moreover, this penetration factor will reduce the total equivalent inertia and hence

the transient stability. In steady state operation, the voltage stability will also be considered in this study.







Sponsors

CHLORIDE ION DETECTION IN CONCRETE THROUGH GALVANIC AND RESISTIVITY

METHODS

Stephen Sammut1, Edward Gatt1, Ruben Paul Borg2

1 Department of Micro & Nano electronics, Faculty of ICT, University of Malta, 2 Faculty for the Built Environment, University of Malta,

Corresponding Author E-mail: 2 [email protected]

Keywords: Concrete, galvanic corrosion, resistivity, chloride, monitoring, deterioration, rebar corrosion.

ABSTRACT

The construction industry has a significant impact on the environment with increasing consumption of resource. The

degradation of reinforced concrete structures when exposed to different environmental conditions affects the life-time of

structures and presents significant challenges in the construction industry. More sustainable construction methods are

necessary to improve durability and resilience of structures. Resilient structures can be achieved through the development

of systems which are autonomously able to detect harmful chemical substances in time, to enable remedial action to be

undertaken, thus avoiding structural degradation. This paper reviews and explores two methods of chloride ion detection,

namely the voltage produced by a galvanic pair of metals under the influence of chloride ions, and the change in resistivity

which an influx of chloride ions produces in the actual concrete. This paper explores the harnessing of such methods in

the development of a sensory platform used for the detection of chloride levels beyond a threshold level. Such a platform

should be able to perform autonomously from a power supply and have the potential for long term monitoring of the

concrete structure´s performance.





Sponsors

NEW RISK ASSESSMENT MODEL FOR BRIDGE MAINTENANCE

Hamad Almutairi1, CharalamposBaniotopoulos

1, Wasfe Ali

1 and Min An

2

1School of Engineering, Scholl of Engineering, University of Birmingham, Edgbaston B15 2TT, UK

2School of Built Environment , University of Salford, Manchester, UK


Keywords: Bridges, Fuzzy reasoning approach, Fuzzy analytical hierarchy process, Risk levels

Abstract. Bridges are vital link of the transport network infrastructure, they are susceptible to damage by daily wear

and tear, overloading and accidental loading, human behaviour, natural hazards and aggressive environmental

circumstances. To avoid disruption of the network, the adequate performance of the bridges has to be maintained by

undertaking systematic repair and strengthening programme, so that the likelihood of a bridge collapse is avoided.

Once the defects in Bridges are identified by regular inspections, structural assessments, changes in loading

patterns, changes in design and assessment standards, or through accidental damage or deterioration models, then

the Risk Model is used to priorities the bridges for maintenance works based on risks. This ensures that the finite

money available to Asset Managers is allocated correctly to most vulnerable structures.

Presently, many well established tools are applied to investigate potential hazards that would lead to bridge

structural collapse. However, the applications of these tools are often unable to provide satisfactory results when the

risk data is incomplete, or the level of uncertainty in the risk data is either complex or high. Thus, it is essential to

develop new methods to overcome the limitation of the current assessment tools. The approach is to introduce bridge

risk assessment model by using the fuzzy reasoning approach (FRA) based on fuzzy set theory and fuzzy analytical

hierarchy process (AHP). In this method, the qualitative descriptors are three fundamental risk parameters which

describes Failure Likelihood(FL), Consequence Severity(CS), Weight Factor(WF) to obtain the risk level [1]. The

proposed risk assessment method is able to calculate both qualitative and quantitative risk data. AHP is used to find

the problem and determine the information loss which helps in determining the relative importance of the risk factor.

The outcomes of the risk assessment are presented as the risk degrees and the defined risk categories of risk levels

(RLs). The method under development aims to help managers and engineers working with bridge risk analysis

providing them with a method and a powerful tool to perform their risk management.




Sponsors

EXPERIMENTAL INVESTIGATIONS ON RESISTANCE SPOT WELDING OF BUILT-UP COLD-FORMED STEEL CORRUGATED WEB BEAMS

Viorel Ungureanu1 and Stefan Benzar

1

1Department of Steel Structures and Structural Mechanics

Civil Engineering Faculty, Politehnica University Timisoara

Ioan Curea no. 1, Timisoara, 300224, Romania

e-mail: [email protected]; [email protected]

Keywords: Cold-formed steel members, Corrugated web, Built-up beams, Spot welding, Experimental investigation.

Abstract. Corrugated web girders emerged in the past two decades. Their main advantages consist in the possibility to use slender

webs avoiding the risk of premature local buckling. Consequently, higher moment capacity might be obtained increasing the beam

depth with really thin webs, which are stiffened by the corrugations. Increased interest for this solution was observed for the main

frames of single-storey steel buildings and steel bridges. A new solution, in which the beam is composed of a web of trapezoidal

steel sheet and flanges of back-to-back lipped channel steel sections, connected using self-drilling screws, was proposed at the

Politehnica University of Timisoara. Starting from this solution the paper extends and investigates the use of spot welding as seam

fastening to build the web, in order to increase the degree of automation of fabrication. Experimental work on specimens in shear

having two or three layers of steel sheets connected by spot welding will be presented in this paper.





Sponsors

Mixed-Mode Analysis of a General Oriented Crack for a Functionally Graded Strip Sandwiched Between Two

Homogeneous Layers of Finite Thickness

Nadim I. Shbeeb 1

, M. T. Abu Safaqah 2

1Assistant Professor, Civil Engineering Department, Jordan University of Science and Technology; P.O Box 3030, 22110, Irbid,

Jordan . E-mail: [email protected]

2 Graduate Student, Civil Engineering Department, Jordan University of Science and Technology; P.O Box 3030, 22110, Irbid,

Jordan.

Keywords: Functionally Graded Materials, Stress Intensity Factors, Strain Energy Release Rate, Mixed-Mode, Crack Orientation

ABSTRACT

The driving forces of a generally oriented crack embedded in a Functionally Graded strip sandwiched between two

homogenous layers of finite thickness are determined using singular integral equations with Cauchy kernels, and integrated using

Lobatto-Chebyshev collocation method. Mixed-mode Stress Intensity Factors (SIF) and Strain Energy Release Rates (SERR) are

calculated. The SIF are compared for verification with previously published results. Parametric studies are conducted for various

non-homogeneity ratios, crack lengths, crack orientation, thickness of the strip and thickness of the homogeneous layers.

RIVER BANK FILTRATION FOR WASTEWATER REUSE IN IRRIGATION:

ADAPTATION TO CLIMATE CHANGE

Ziad Al-Ghazawi1*, Thomas Boving2, MoayyadShawaqfah3, Jamal Al-Rashdan4, William Blanford5, Ismael Saadoun1+,

Qutaiba Ababneh1+and Jack Schijven6,7




Sponsors

1Jordan University of Science and Technology, Irbid, 22110, Jordan

2University of Rhode Island, Kingston, RI, USA 3 Al al-Bayt University, Mafraq, Jordan

4 Water Authority of Jordan, Amman, Jordan 5 Louisiana State University, Baton Rouge, LA, USA

6 RIVM Institute, Bilthoven, The Netherlands 7Utrecht University, Geosciences, Utrecht, The Netherlands

*Corresponding author email: [email protected]

Keywords: RBF, Microbes, Removal, Irrigation, Wastewater, Adaptation, Climate Change

Abstract. In the context of adaptation of the water resources sector to climate change, water reuse is widely proposed and

encouraged especially in arid and semi-arid areas like the Middle East. We consider riverbank filtration (RBF) an appropriate

technology that efficiently and dependably procure quality water from Zarqa River thus making a contribution to protect Jordan’s

remaining surface and ground water resources. The river is contaminated with treated domestic and industrial wastewater principally

from the city of Amman, but still serves as a main source for irrigation water.

Since 2007, a riverbank filtration (RBF) well field consisting of six wells was installed along the Zarqa river, Jordan. Salt tracers

were released to the hyporheic zone and were detected in a RBF well (5 m distance from the river) during subsequent pumping.

From the tracer test data (pumping rate: 10 m3/h), rapid travel times were approximated (14 m/min). Additional sampling

demonstrated that fecal indicator bacteria and bacteriophages were removed from river water by RBF at the Zarqa River field site

by up to 4.2 log10, which is a significant improvement of the river water quality. This implies that public health risks from exposure

to riverbank filtrated water, like consumption of raw vegetables that are irrigated with this water, may be reduced by 2000 to 2500

times as compared to using river water directly. These results suggest that riverbank filtration is an appropriate technology which

can enhance the safe reuse of treated wastewater.




Sponsors

INDEX

3. NIKE GOES AUXETIC. WHY?

Georgios E. Stravroulakis

4. DESIGN FOR SUSTAINABILITY AND RESILIENCE-NEW TERMS FOR TRADITIONAL TASKS OR AN

ENLARGEMENT OF THE PERSPECTIVES FOR ENGINEERS

danile P. Lützkendorf1

, Maria Balouktsi1

5. CLIMATE ADAPTIVE NEIGHBORHOODS

Daniel M. Muntean1

and Viorel Ungureanu2

6. ASSEMBLY PROGRAMMING SIMULATION OF AUTOMATED CONSTRUCTION FOR MODULAR BUILDINGS

Wu-yue Xiong, Jian Yang*, Hao Hu, Feng Xu

7. SUSTAINABLE TRANSPORT DEVELOPMENT IN LITHUANIA: AIR POLLUTION AND NOISE REDUCTION IN

CITIES, CONSTRUCTION OF BYPASS, IMPLEMENTATION OF SUSTAINABLE INNOVATIONS

Zaneta Stasiskiene1

, Ona Samuchoviene2

8. THE POTENTIAL OF ENVIRONMENTAL MANAGEMENT ACCOUNTING TO FOSTER SUSTAINABLE

INNOVATIONS

Zaneta Stasiskiene1

9. A PROPOSED AUTOMATED SYSTEM FOR QUALITY ASSURANCE SUSTAINABILITY OF ENGINEERING

EDUCATION Mohammed A. Almomani 1*, Yahia Qawasmi2

10. NONLINEAR FINITE ELEMENT FORMULATION FOR CONTACT PROBLEMS WITH NONCONFORMING

MESHES

Layla Amaireh1

and Ghadir Haikal2

12. OFF-SITE MODULAR BUILDING CONSTRUCTION WITH COLD-FORMED STEEL

H. Zhang1, J. Yang2 and C. Baniotopoulos3

13. ANALYSIS OF THE STRESS DISTRIBUTION IN CASTELLATED BEAMS WITH STIFFENERS

T. Aldafafea1,2, S. Durif1,2, A. Bouchaïr1,2 and E. Fournely1,2

14. FINITE ELEMENT MODELLING OF PRELOADED GUSSET PLATE CONNECTION BETWEEN POLYGONAL

BUILT-UP MEMBERS

Slobodanka Jovašević1

, Carlos Rebelo2

and Marko Pavlović3

15. COMPUTATIONAL DESIGN METHODOLOGY OF FREE-FORM STEEL STRUCTURES BY MEANS OF

TOPOLOGY OPTIMIZATION AND NONLINEAR STRUCTURAL ANALYSES


, Charis J. Gantes1

and Nikos D. Lagaros2

16. ADVANCED NUMERICAL SIMULATION OF LOAD-BEARING COLD – FORMED - STEEL DRYWALL

SYSTEMS FURNACE TESTS


,Iason K. Vardakoulias1

, Dionysios I. Kolaitis2

, Charis J. Gantes1

and Maria A. Founti2

17. MACHINE LEARNING AND OPTIMALITY IN MULTI -STOREY STEEL FRAMES

Georgios K. Bekas 1and Georgios E. Stravroulakis2

18. FINITE ELEMENT MODELLING OF COMPRESSIVE AND TENSILE PRESTRESSED TUBULAR MEMBERS

Michaela Gkantou1

, Marios Theofanous1

and Charalampos Baniotopoulos1

19. PUNCHING SHEAR STRENGTH OF FIBROUS HIGH STRENGTH REINFORCED CONCRETE FLAT PLATE

SLABS WITH ECCENTRIC LOADINGDr.

Abdulkareem D. Mahmood 1

and Sherwan M. Zaki2

20. DURABILITY OF CONCRETE SEWERS: MONITORING, ASSESSMENT AND IMPROVEMENT




Sponsors

Mojtaba Mahmoodian1

and Morteza A. Alani2

21. PREDICTED STRAND TRANSFER LENGTHS IN FULL SCALE AASHTO PRETENSIONED CONCRETE GIRDER

Rajai Z. Al-Rousan1

and Muneer H. Barfed1

22. A NEW BREED OF SUSTAINABLE ULTRA-LIGHTWEIGHT AND ULTRA-SHALLOW STEEL-

CONCRETE COMPOSITE FLOORING SYSTEMS: LCA AND LCC

Inas Ahmed1


, and Farzad Neysari4

23. NUMERICAL SIMULATION OF SUSTAINABLE HIGH STRENGTH BOLTED SHEAR CONNECTION USED IN

STEEL-CONCRETE COMPOSITE JOINTS

Maitham k. Alibrahemy1,2,3, Sébastien Durif 1,2, Philippe Bressolette 1,2, and Abdelhamid Bouchaïr 1,2

24. HYSTERETIC BEHAVIOURS OF RWS CONNECTIONS WITH COMPOSITE BEAMS

Mohamed A. Shaheen1


and Satoshi Yamada3

25. INFLUENCES OF SLEEPER/TIE MATERIAL CHOICES ON GEORISKS IN RAILWAY SYSTEMS UNDER

CLIMATE UNCERTAINTIES

Sakdirat Kaewunruen1

, Luisa Macedo Paes Cortes Lopes2

and Dan Li3

26. PHYSICO-CHEMICAL AND MECHANICAL ASSESSMENT OF MORTARS WITH LIME, METAKALIN AND

NANO-TITANIA FOR RESTORATION APPLICATIONS

N. Maravelaki* K. Kapetanaki, C. Kapridaki, M. Stavroulaki, E. Gratsielou

27. IMPROVEMENT OF ADHESION BETWEEN AGGREGATES AND BITUMEN

Ahlem Loucif, Tarek Ninouh, Khalil Bouchouk

28. POLLUTION REDUCTION OF TIRES WASTE THROUGH INCORPORATION IN THE BITUMEN TO FIGHT

AGAINST PAVEMENT RUTTING Khalil Bouchouk1, Tarek Ninouh1

29. INCORPORATION OF GRAPHENE INTO GEOPOLYMERIC CEMENT: FUNDAMENTALS OF CEMENT

NANOCOMPOSITES MECHANISM AND FUNCTIONS

M. Davoodabadi1

, J. Yang2

and Q. F. Liu3

30. DATA COLLECTION AND HARMONIZATION FOR SEISMIC HAZARD EVALUATION OF THE WEST-BANK

TERRITORIES Data collection and harmonization for seismic hazard evaluation of the West - Bank territories

L. Danciu1

, G. R. Limon2

, I. Grigoratos3

, P. Ceresa4

, R. Monteiro5

, and J. Al-Dabbeek 6

31. USE OF TUNED MASS DAMPERS TO CONTROL EXCESSIVE VIBRATIONS OF PEDESTRIAN BRIDGES

Mohammad Alhassan1

and Dihong Shao2

32. SEISMIC DEMANDS ASSESSMENT OF TALL BUILDINGS

B. Chikh1, Y. Mehani1 and M. Hadid2

33. OPTIMAL ASPECT RATIO FOR DIFFERENT TYPES OF BRACED DOMES SUBJECTED TO GRAVITY LOADS

Ghazi Abu-Farsakh 1

, Nasser Al-Huthaifi2

34. INELASTIC RESPONSE AND SEISMIC DEMANDS ASSESSMENT OF BRIDGES

B. Chikh1, A. Zerzour2 and K. Abdallah3

35. OPTIMAL DESIGN OF DOUBLE-SKIN ALUMINIUM FACADE SYSTEMS

Themistoklis N. Nikolaidis1

, Iosif Filosof2

, Charalampos C. Baniotopoulos3

36. CONVERTING LOW-GRADE SOLID WASTES INTO USEFUL PRODUCTS

Munther Kandah,1

, Fahmi Abu Al-Rub2 and Dalia Al-Sareef3

37. EVALUATING THE PERFORMANCE OF GEOSYNTHETIC REINFORCED SOIL INTEGRATED BRIDGE

SYSTEM (GRS-IBS)

Murad Abu-Farsakh1

, Milad Saghebfar2

, Allam Ardah2

, and Qiming Chen2




Sponsors

38. ESTIMATING THE INCREASE IN PILE RESISTANCE WITH TIME (OR SETUP) BASED ON SOIL PROPERTIES

Murad Abu-Farsakh1

and Md. Nafiul Haque2

39. DEVELOPMENT OF THREE DIMENSIONAL GROUNDWATER MODEL FOR AL-CORIDOOR WELL-FIELD IN

JORDAN

M.Shawaqfah 1, R. Hatamleh2, I.Alqdah 3, and A.Adaileh4

40. FRAGOKASTELLO SFAKIA: RESTORATION AND CONSERVATION THROUGH COMPATIBLE

ARCHITECTURAL, STRUCTURAL AND CONSTRUCTION MATERIALS

Stavroulaki Maria1, Skoutelis Nikos1, Maravelaki Noni-Pagona1, Drosopoulos Georgios2 and Stavroulakis Georgios3

41. PREDICTING CONTOUR SLUMP FLOW OF SELF-COMPACTING CONCRETE USING BENTONITE AS FILLER

Arabi N. S. Al Qadi1

43. GROUND SOURCE HEAT PUMP SYSTEMS AND PUMP EXCHANGER SYSTEMS IN JORDAN

Dr. Bilal Yasin1, Dr. Abdallah S. Alkhawaldeh2

44. NUMERICAL INVESTIGATION OF THE ENHANCED PERFORMANCE OF SOLAR PONDS USING

NANOPARTICLES

A. Anagnostopoulos1

45. WIND EFFECTS ON ROOF-MOUNTED SOLAR PANELS

Hatem Alrawashdeh1and Ted Stathopoulos2

46. IMPROVING SUSTAINABILITY AND RESILIENCE OF FUTURE CITIES. POSITIONING OF WIND TURBINES

WITHIN THE URBAN ENVIRONMENT

G. Vita1*

, H. Hemida1

and C. Baniotopoulos1

47. AN INVESTIGATION ON VIRTUAL OUTPUT IMPEDANCE PROFILE FOR WIND TURBINES BASED SYSTEMS

Khaled Mohammad Alawasa

48. A REVIEW ON EXPERIMENTAL FATIGUE ANALYSIS OF TUBULAR JOINTS FOR OFFSHORE WIND

TURBINES

Gonçalo T. Ferraz1, Ana Glišić2

49. WIND INDUCED FATIGUE IN TUBULAR STEEL WIND TURBINE TOWER WELDED JOINTS

Nafsika Stavridou1

, Evangelos Efthymiou1

and Charalampos C. Baniotopoulos2

50. WIND TURBINE LOAD SIMULATIONS USING TWO DIFFERENT SERVO-HYDRO-AEROELASTIC SOFTWARE

CODES

Mohammad Reza Shah Mohammadi1

, Paul Thomassen2

and Carlos Rebelo 3

51. INVERSE WIND LOAD RECONSTRUCTION WITH APPLICATION TO WIND TURBINE STRUCTURES

Mirjana Ratkovac1

, Rüdiger Höffer2

52. STOHASTIC VARIABLES IN MODELLING OF THE WAVE LOADS ON OFFSHORE WIND TURBINE

STRUCTURES

Ana Glišić1

, Gonçalo T. Ferraz 2

53. PRELIMINARY EXPERIMENTAL AND NUMERICAL INVESTIGATION ON DYNAMIC PROPERTIES OF

SANDWICH-TYPE SHELLS FOR WIND TURBINE TOWERS

Stylianos M. Vernardos1

, Charis J. Gantes1

, Efstratios G. Badogiannis1

, Harris P. Mouzakis1

and Xenofon A. Lignos1

54. AN OPTIMISATION DESIGN APPROACH TO THE DESIGN OFHYBRID LATTICE-TUBULAR WIND TURBINE

TOWERS

Efthymios Koltsakis1, Panagiotis Manoleas2 and Ove Lagerqvist3

55. RESILIENCE STUDE OF AASHTO DRAG FORCE COEFFICIENTS USING FINITE ELEMENT METHOD

Amin H. Almasri1 and Shadi Moqbel2

56. SWITCHING CHARASTRISTICS OF IGBT AS THE INITIAL FAILURE INDICATOR OF THE WIND TURBINE

CONVERTERS R. Moeini1, P. Tricoli2, H. Hamida3 and C. Baniotopoulos4




Sponsors

57. Studying the impact of photovoltaic penetration factor on the Jordanian power system

Saher Albatran, Ahmad Allabadi, Nedal Al-Ababneh

58 CHLORIDE ION DETECTION IN CONCRETE THROUGH GALVANIC AND RESISTIVITY METHODS

Stephen Sammut1, Edward Gatt1, Ruben Paul Borg2

59. NEW RISK ASSESSMENT MODEL FOR BRIDGE MAINTENANCE

Hamad Almutairi1, CharalamposBaniotopoulos1, Wasfe Ali1 and Min An

60 EXPERIMENTAL INVESTIGATIONS ON RESISTANCE SPot welding OF Built-Up Cold-Formed Steel

CORRUGATED WEB Beams

Viorel Ungureanu1 and Stefan Benzar1

61 Mixed-Mode Analysis of a General Oriented Crack for a Functionally Graded Strip Sandwiched Between Two

Homogeneous Layers of Finite Thickness

Nadim I. Shbeeb 1, M. T. Abu Safaqah 2

62 RIVER BANK FILTRATION FOR WASTEWATER REUSE IN IRRIGATION: ADAPTATION TO CLIMATE

CHANGE

Ziad Al-Ghazawi1*, Thomas Boving2, MoayyadShawaqfah3, Jamal Al-Rashdan4, William Blanford5, Ismael Saadoun1+,

Qutaiba Ababneh1+and Jack Schijven6,7

cesare'17 international conference dead sea jordan 3-8 may ... · auxetics, taking as starting...

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