seismic engineering research infrastructures for european … · 2009-10-12 · seismic engineering...

COMMISSION OF THE EUROPEAN COMMUNITIESFP7- INFRASTRUCTURES-2008-1SP4-Capacities

S E R I E SSEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

SP4 Capacities

FOR EUROPEAN SYNERGIES1st Workshop – Iasi, July 14th 2009

LNEC Seismic Testing Facility14 years of activity14 years of activity

Ema Coelho and Alfredo Campos CostaEarthquake Engineering Division – NESDENational Laboratory for Civil engineering – LNEC, Lisbon

SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES

LNEC/NESDE St ffLNEC/NESDE Staff

Ema Coelho Alfredo C. Costa

Rogério Bairrão A CarvalhoM L SousaLuis MendesMaria FalcãoP Candeias Rogério Bairrão A. CarvalhoM. L. SousaLuis MendesMaria FalcãoP. Candeias

Engineering S i l

Structural d

Marta MateusFilipa Salvado Anabela Martins

Seismology and Seismic Risk

and Earthquake Engineering

Marta MateusFilipa Salvado Anabela Martins

SERIES 1st Workshop - Iasi, July 14th 2009Lab Technicians


LNEC/NESDE Main acti itiesLNEC/NESDE Main activities• Seismic action characterization studies, seismic hazard and

seismic risk• Seismic assessment of structures and study of techniques for

i i t ti d h bilit tiseismic protection and rehabilitation• Support to the development of seismic codes• Technical and scientific support to National Authorities• Technical and scientific support to National Authorities• Dynamic characterisation studies (in-Situ Ambient Vibration

Tests )Tests )• Experimental research. Exploitation of LNEC seismic

testing facility (since 1995)g y 995▫ European research programmes (4th, 5th, 6th and 7th

Framework Programmes of the EU)N i l h (FCT)

SERIES 1st Workshop - Iasi, July 14th 2009

▫ National research programmes (FCT)▫ LNEC funding


C i i i f iliLNEC seismic testing facility• Participation in SERIES project• Participation in SERIES project▫ WP2/NA1 – Distributed database, data

communication and access (1.5 person-months)( 5 p )▫ WP3/NA2 – Qualification of research infrastructures

(1.5 person-months)▫ WP4/NA3 – European integration – European and

international co-operation of research infrastructures (2 th )(2 person-months)

▫ WP9/TA5 – Transnational access to LNEC Seismic Testing Facility(min 100 access days)Seismic Testing Facility(min. 100 access days)

▫ WP13/JRA2 – Advanced sensing, data processing and modelling (11 person-months)


g ( p )


LNEC seismic testing facilityLNEC seismic testing facility• Main characteristics:

Area ≈ 450m2

Ceiling height 10m

bl h i h 6Movable height 6m

Travelling crane Travelling crane 400kN

A t 4 5


Access gates 4.5m

http://www.lnec.pt/organizacao/de/nesde/


LNEC seismic testing facility

Large 3D shake tableLarge 3D shake table

S ll h k blSmall 1D shake table

Reaction wall (in preparation)

SERIES 1st Workshop - Iasi, July 14th 2009http://www.lnec.pt/organizacao/de/nesde/


NESDE facilityLNEC seismic testing facilityNESDE facilityLNEC seismic testing facility3D shake table

Max payload 40 ton

S f 6 b 6Surface 4.6m by 5.6m

Three independent orthogonal axesThree independent orthogonal axes

Displacements actively controlledp y

Rotations passively restrained

Frequency range from 0.1Hz up to 40Hz


40Hz

http://www.lnec.pt/organizacao/de/nesde/


LNEC seismic testing facilityLNEC seismic testing facility1D shake table

Max payload 6 tonnes

Surface 3.2m by 2.2m

Single horizontal/vertical axis

Di l i l Displacement actively controlled

Frequency range from 0.1Hz up to 25Hz



LNEC seismic testing facilityLNEC seismic testing facilityReaction wall (in preparation)

Maximum vertical force ≈ 600kN

Maximum horizontal force ≈ 300kN

Maximum height ≈ 4.5m



iInstrumentation

• Accelerometers (120 units)▫ 80+ Piezoelectric accelerometers (PCB)80+ Piezoelectric accelerometers (PCB)▫ 19 Capacitive accelerometers (ENDEVCO)▫ 15 Force-balance accelerometers (KINEMETRICS)15 Force balance accelerometers (KINEMETRICS)▫ 3 Triaxial accelerometers (CROSSBOW)



iInstrumentation

• Displacement Transducers▫ 30+ LVDTs – (RDP and HBM)▫ 7+6 Optical 2D displacement transducers (HAMAMATSU)▫ 1 Optical 3D displacement system (KRYPTON) with 50+ Leds

L d C ll• Load Cells▫ 5 Dynamic load cells (INSTRON and LEBOW)▫ Several load cells made and calibrated in LNECSeveral load cells made and calibrated in LNEC



iInstrumentationSt ai ga ges• Strain gauges▫ Several conditioning devices for electrical strain gauges▫ Fibre optical extensometers (acquisition planned for 2009)Fibre optical extensometers (acquisition planned for 2009)

• Cameras for Test Documentation3 St d d id d l di it l h t h ▫ 3 Standard video cameras and several digital photograph cameras

• Cameras for Data Acquisition (planned for 2009, SERIES NA )SERIES, NA1)▫ 3-5 high speed cameras (e.g. PROSILICA)▫ 1 video acquisition card1 video acquisition card



iInstrumentation



Instrumentation



iInstrumentation



Signal Processing and Analysis SoftwareSignal Processing and Analysis Software

• Software LNEC-SPA▫ Signal Generation▫ Data acquisition▫ Signal Processing▫ System identification▫ Visualization



O h i l i i iOther experimental activities• In-Situ Ambient Vibration Tests (OMA)▫ Output-only identification methods implemented in

LNEC-SPA:d l d lAveraged Normalized Power Spectral Density (ANPSD)

Frequency Domain Decomposition (FDD) E h d F D i D iti (EFDD)Enhanced Frequency Domain Decomposition (EFDD)



Experimental activity – EU projectsExperimental activity – EU projects

• ECOEST II – 1996-1999 – 5 User Groups• ECOEST II 1996 1999 5 User Groups• NEFOREEE – 2001-2005• ECOLEADER 2002 2005 4 User Groups• ECOLEADER – 2002-2005 – 4 User Groups• SPEAR – 2002-2005

PRECAST EC8 6• PRECAST EC8 – 2003-2006• SAFECAST – Started 2009



Experimental activity – National/LNEC projects

• COMREHAB – 2000-2001• MITRIS 1999 2004• MITRIS – 1999-2004• FCT Stone Masonry – 2005-2008

TLD /• TLD – 2007/2009• UMinho/LNEC Stone Masonry – 2008/2009• QREN Reinforced Masonry – 2008/2009• FCT Masonry enclosures – 2009/2010



l llECOEST II UG1 – Imperial College (UK)• Tests on RC Walls for • Tests on RC Walls for

selective techniques▫ Study of innovative Study o o at e

techniques for repair and seismic retrofit of

i f d t ll reinforced concrete walls (selective intervention)

▫ One-storey, 3.2m height, O e sto ey, 3. e g t, 1.2m width

▫ Geometric scaling factor 1.5

▫ Materials: C20/25; S400



ECOEST II UG1 Imperial College (UK)ECOEST II UG1 – Imperial College (UK)

• Tests on RC Walls for selective techniques

St d f i ti ▫ Study of innovative techniques for repair and seismic retrofit of reinforced concrete walls (selective intervention)O t 3 2 h i ht ▫ One-storey, 3.2m height, 1.2m width

▫ Geometric scaling factor g1.5

▫ Materials: C20/25; S400



ECOEST II UG1 – Imperial College (UK)

SERIES 1st Workshop - Iasi, July 14th 2009Cracking pattern after

collapse


ECOEST II UG2 – University of Pavia ECOEST II UG2 – University of Pavia (Italy)

Assessment of the seismic beha iour of e isting bridge • Assessment of the seismic behaviour of existing bridge columns in accordance with old code



ECOEST II UG2 – University of Pavia ECOEST II UG2 – University of Pavia (Italy)▫ Fourteen 1:4 scaled piers▫ 1960 decade Italian 9

construction▫ Bridge structure

S l l i f ▫ Several steel reinforcement arrangements

Observed damage


Force-displacement relationship


ECOEST II UG3 – University of ECOEST II UG3 – University of Basilicata (Italy)

• RC frames reinforced with di i i d ienergy dissipation devices

▫ Study the effectiveness of passive control techniques passive control techniques applied to rehabilitation of existing RC structures

▫ Comparison of different types of bracings (steel with plastic deformation vs with plastic deformation vs shape memory alloys)



ECOEST II UG3 – University of ECOEST II UG3 – University of Basilicata (Italy)

Metallic Dampers

Shape Memory Alloys



ECOEST II UG4 – University of Patras ECOEST II UG4 – University of Patras (Greece)

• RC frames infilled with masonry panelsmasonry panels▫ Dynamic interaction

between RC frames designed in accordance with EC8St d th ff t f ▫ Study the effect of acceleration (perpendicular) to the (p p )masonry panels



ECOEST II UG4 – University of Patras ECOEST II UG4 – University of Patras (Greece)

Observed damagedamage

Orbits of relative displacements at the top slab



ECOEST II UG5 Polytechnic of Bari ECOEST II UG5 – Polytechnic of Bari (Italy)

• Low yield steel and aluminium shear panelsaluminium shear panels▫ Seismic behaviour of two

different kinds of dissipation devices -shear panels inserted in a steel structuresteel structure



ECOEST II UG5 P l t h i f B i ECOEST II UG5 – Polytechnic of Bari (Italy)( y)

Different types of energy dissipaters



NEFOREEENEFOREEE• New Fields of Research in Earthquake Engineering

Experimentationp•Task 1 – Controlled test in the non-linear range


•Task 2 – Complementary nature of shaking tables and reaction walls


ECOLEADER UG1 University of LiègeECOLEADER UG1 – University of Liège

• Seismic behaviour of masonry housing in low

i i i seismicity areas▫ Calibrate and validate

numerical modelsnumerical models▫ Propose design rules for

masonry structures in low seismicity areas

▫ Test the effectiveness of reinforcing solutions reinforcing solutions through shaking table tests



ECOLEADER UG1 University of LiègeECOLEADER UG1 – University of LiègeCollapse of the non reinforced model on the shaking tablemodel on the shaking table

Damage observed in reinforced model on the last test



ECOLEADER UG2 – University of ECOLEADER UG2 – University of Ljubljana

i i f f li h l• Seismic performance of lightly reinforced structural walls in low to moderate seismicity areasto moderate seismicity areas▫ Seismic behaviour of lightly

reinforced structural walls typically used in Central Europe typically used in Central Europe (Slovenia)

▫ Walls with T (H) cross sections▫ Behaviour of coupling beams in

thin walls▫ Influence of 3D loading Influence of 3D loading

conditions▫ Calibration of analytical models



ECOLEADER UG2 – University of ECOLEADER UG2 University of Ljubljana

Observed Damage -Slovenian Model

Observed Damage -French Model



ECOLEADER UG3 – University of ECOLEADER UG3 – University of Bucharest

• Enhancing seismic resistance and durability of

l natural masonry stone▫ Demonstration of a new

polymer grid reinforcementOriginal stone masonry modelpolymer grid reinforcement

▫ Behaviour of granite stone masonry

masonry model

▫ Reinforcement with horizontal bed layersReinforcement with ▫ Reinforcement with additional vertical grid


Reinforcement after the first series of tests – 2nd phase


ECOLEADER UG3 University of BucharestECOLEADER UG3 – University of Bucharest

Damages observed (1stDamages observed (1st

phase)



ECOLEADER UG3 University of BucharestECOLEADER UG3 – University of Bucharest

Damages observed (2nd

phase)



ECOLEADER UG4 – University of ECOLEADER UG4 – University of Catalonia

• Rocking motion and impact of historical constructions▫ Contribute to a better

knowledge of historical masonry constructions aso y co st uct o s subjected to earthquakes

▫ Calibration and verification of analytical tools to simulate the analytical tools to simulate the non-linear dynamics involved in the seismic analysis of historical constructionshistorical constructions

▫ Guidelines for practitioners based on a parametric study



ECOLEADER UG4 – University of ECOLEADER UG4 – University of Catalonia▫ Testing set-up assembled to

provide a static reference frame where rocking motions gcould be measured without any contact, and to prevent rocks from falling on the h ki blshaking table

▫ Measurement of the kinematics of the rigid block 6d f f h i 6dofs of the specimens

▫ Usage of innovative optical systems (infrared light with

i )5

10

m)

Relativo P1 xMovimento mesa

mirrors)

-10

-5

00 2 4 6 8 10 12 14 16 18 20

Time (sec)A

mpl

itude

(mm


-15

-10A


SPEAR• Seismic Performance

Assessment and Rehabilitation

1:2.5 reduced scale RC model

▫ 3-storey, torsionally unbalanced, building structure representative of southern representative of southern Europe RC construction previous to specific seismic regulation


Detail of a beam-column joint


SPEARSPEAR

1st floor soft-storey mechanism in the transverse directiontransverse direction

Base shear versus top

1,0g50

displacement in the final test

-25

0

25

-100 -75 -50 -25 0 25 50 75Sh

ear F

orce

[kN

]

SERIES 1st Workshop - Iasi, July 14th 2009-75

-50

Displacement [mm]

TranverseLongitudinal


PRECAST STRUCTURES EC8PRECAST STRUCTURES EC8

• Seismic behaviour of precast concrete structures▫ Study the behaviour of Precast ▫ Study the behaviour of Precast

structures (full structures and connections) designed in accordance with EC8accordance with EC8



SAFECASTSAFECAST

• Experimental activity on new and existing • Experimental activity on new and existing connections▫ LNEC+ANIPB proposed 2 column-to-foundation ▫ LNEC+ANIPB proposed 2 column-to-foundation,

5 beam-to-column, 1 cladding-to-structure and 1 wall panel-to-wall panel connectionswall panel to wall panel connections



COMREHAB

• Seismic reinforcement of masonry buildings th h th f through the use of GFRP’s▫ Assessment of the

efficiency of different reinforcement techniques in the seismic behaviour in the seismic behaviour of masonry walls

▫ Tests on twelve models (four unreinforced and (four unreinforced and eight reinforced with two different techniques) with f l l f i l l d


four levels of axial load


COMREHABCOMREHABDamage observed in a unreinforced model

SERIES 1st Workshop - Iasi, July 14th 2009Damage observed in a reinforced model


MITRIS – Seismic risk mitigation in gPortugal Mainland

• Seismic behaviour of old stone masonry houses▫ Five 1:3 reduced scale

models with masonry walls and wooden floorswalls and wooden floors

▫ Three different reinforcement techniques qto improve the connection between walls and floors and to improve and floors and to improve the resistance of masonry piers


Model 3 – reinforced with GFRP strips and steel ties connecting opposite walls


MITRIS – Seismic risk mitigation in Portugal Mainland

Damages observed in Model 3


Damages observed in Model 3


TLD – Tuned Liquid Dampers for TLD – Tuned Liquid Dampers for seismic vibration mitigation

• Study the behaviour and performance of Tuned Liquid Dampers (TLD) – Passive Protection Systems when Dampers (TLD) Passive Protection Systems when subjected to seismic actions



TLD – Tuned Liquid Dampers for TLD Tuned Liquid Dampers for seismic vibration mitigation

pres

são

Computador

Sistema deReservatório

tem po

SCXI

0

1

NationalInstruments

Aquisição de DadosReservatório

Plataforma Sísmica

Transdutor de Força

LVDTSCXI SCXI SCXI SCXI

Sensores de Pressão

LVDT



UMinho Seismic behaviour of old UMinho – Seismic behaviour of old stone masonry houses

Model after reinforcementOriginal unreinforced model

Model after reinforcementOriginal unreinforced model



UMi h S i i b h i f ld UMinho – Seismic behaviour of old stone masonry housesy

Model after reinforcement


Original unreinforced model


UMinho – Seismic behaviour of reinforced concrete block masonry

unreinforced

reinforced



UMinho – Seismic behaviour of reinforced concrete block masonry

unreinforcedunreinforced

•reinforced unreinforced


seismic engineering research infrastructures for european … · 2009-10-12 · seismic engineering...

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