project report on visit to construction of flyover at aziz cross on gt road gujranwala

RUBNAWAZ BHATTI 2015-UET-CCET-CIVIL-02

PROJECT REPORT VISIT TO CONSTRUCTION OF FLYOVER AT AZIZ CROSS ON G.T ROAD GUJRANWALA

NAME

RUBNAWAZ

REG NO.

2015-UET-CCET-CIVIL-02

SUBJECT

SURVEYING

DEPT.

CIVIL ENGINEERING DEPARTMENT

CHENAB COLLEGE OF ENGINEERING &

TECHNOLOGY GUJRANWALA

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Table of Contents

1) ABSTRACT 032) SALIENT FEATURE OF PROJECT 03

I. TABLE. 01 033) INTRODUCTION 04

II. FIGURE. 01 04III. FIGURE. 02 04

4) INTERCHANGE CONFLICT POINT 05I. FIGURE. 03 05

II. FIGURE. 04 055) BASIC COMPONENTS OF FLY OVER 06

I. FIGURE. 05 06II. SUPER STRUCTURE 06III. SUB STRUCTURE 06

i. PILES 07a. FIGURE. 06 07

ii. PILE CAP 07b. FIGURE. 07 07

iii. PIERS 08c. FIGURE. 08 08

iv. ABUTMENT 09d. FIGURE. 09 09e. FIGURE. 10 09

6) REINFORCED EARTH WORK 10I. FIGURE. 11 10

II. FIGURE. 12 107) PRE-STRESSED BOX GIRDER 118) POST TENSIONING CONCRETE 11

I. FIGURE. 13 11II. ADVANTAGES 11

9) SCOPE OF WORK 12I. TABLE. 02 12

II. TABLE. 03 12III. TABLE. 04 12IV. TABLE. 05 13V. TABLE. 06 13

10) WORK PROGRESS 13VI. TABLE. 07 13

VII. TABLE. 08 14

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Abstract

The report is about the construction of flyover at Aziz cross on G.T Road Gujranwala. The visit of the site was planned from our HOD and teachers. On 02, December 2016 at 8:30 AM whole class reached in the department. Our survey teacher Engr. Usman Anwar and Engr. Hadi Hassan gave us instruction about project and safety precautions to avoid from injuries. Its was the first official visit of our session. After that all set we were ready and excited about the visit. After fifteen minutes we reached at the site. We wait for ten minutes in the waiting room. They called us in the conference hall. There was Colonel Asim Bin Waheed, Muhammad Naveed, SDO Highway Muhammad Amir we met with them. After introduction they started a presentation about the project in which they introduce with the whole project. We have learnt many thing from that presentation. After the presentation some student and teachers ask question related to the project. Then, there was a refreshment for us. After all of this, we visited the project area with managing staff of the project engineers etc. Ask the questions about the things and work we observe there. They tell us about the thing which are used first time in Pakistan. Then, we were able to examine the structure material and instruments.

SALIENT FEATURE OF THE PROJECT

CLIENT C&W DEPT

CONSULTANT NESPAK

CONTRACT NLC

APPROVED COST RS. 6672 MILLION

CONSTRUCTION COST RS. 3435 MILLION

LAND ACQUISITION(80 CANALS)

RS. 2920 MILLION

MISCELLANEOUS RS. 317 MILLION

DATE OF COMMENCEMENT 30-01-2016

DATE OF COMPLETION 29-11-2016

TABLE 01

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INTRODUCTION

National Engineering Services Pakistan (NESPAK) was assigned the task of a detailed design by the

Communication and Works Department for a signal-free interchange at Aziz Cross, Gujranwala.

Presently, the traffic system on GT Road at Aziz Cross completely requires uplift in level of service and quality.

A cloverleaf interchange is a two-level interchange in which left turns are handled by ramp roads. To go left vehicles first continue as one road passes over or under the other, then exit right onto a one-way three-fourths loop ramp (270°) and merge onto the intersecting road. The objective of a cloverleaf is to allow two highways to cross without the need for any traffic to be stopped by red lights, even for left and right turns. The limiting factor in the capacity of a cloverleaf interchange is traffic weaving.

FIGURE. 01 (CLOVER LEAF INTERCHANGE)Aziz Cross project is a signal free interchange with partial clover leaf system and two

additional directional ramps.

FIGURE.02

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INTERCHANGE CONFLICTS POINTThe two directions of traffic on the non-freeway road cross to the opposite side on both

sides of the bridge at the freeway. It is unusual in that it requires traffic on the freeway

overpass.

FIGURE. 03 (32 TRAFFIC CONFLICTS)

32 conflicts are completely resolved at Aziz Cross. The figure below show the conflict and

the traffic count at Aziz Cross Gujranwala.

FIGURE. 04

5

https://en.wikipedia.org/wiki/Freeway


BASIC COMPONENTS OF FLY OVER Bridge cross-section can be divided into two portions.

FIGURE. 05

SUPER STUCTURE This portion receives the live load directly. For example, Box

Girder

SUB STRUCTUREThis portion supports the entire structure and live loads

PILES PILE CAP PIERS ABUTMENTS

6

BARRIER

WEB

PIER CANOPY

TOP SLAB

BOTTOM SLAB

SUPER STRUCTURE

SUB STRUCTURE

PILES

PILE CAP


PILES: A pile is vertical structural element of a deep foundation which transfers super structure loads to the earth further down from the surface of subsurface layers.

FIGURE. 06

PILE CAP

Pile cap is a thick reinforced concrete mat that rests on concrete pile which have been casted in ground. Pile Caps distributes the load of super structure from piers and abutment into piles.

7 PILE CAP

PIER

Pile Cap


FIGURE. 07

PIER: A pier is a reinforced, raised structure in form of pillars typically supported by well-spaced pile cap. It transfers the load from deck to pile caps.

For the project at Aziz Cross Gujranwala special shape of piers adopted.

It has two components.

1. Pier Shaft as column2. Pier canopy as transom

FIGURE.08

8

Pier Canopy

Pier Shaft

Box Girder


ABUTMENT: It refers to substructure at the end of the bridge span.

It supports;

Super structure load Live load Lateral earth pressure

FIGURE. 09

FIGURE. 10

9

Abutment


REINFORCED EARTH WORK Reinforced earth wall is earth retaining structure and provided at approaches

(from road level to bridge level).

The key components of a Reinforced Earth wall are geo-strips, granular backfill

and precast concrete facing panels.

The frictional bond between the backfill supports the lateral earth pressure and

stresses induced due to traffic load.

FIGURE. 11

FIGURE. 12

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PRE-STRESSED BOX GIRDER

An optimal and most efficient design of beam is box girder. A box girder consists of enclosed tube with

multiple walls.

The advantage of a box girder is that it better resists torsion. Having multiple vertical webs, it can also carry more load than an I-shape.

POST-TENSIONING CONCRETEPost tensioning is a technique for reinforcing concrete. Post-tensioning tendons, which are pre-stressing steel cables inside plastic ducts or sleeves, are positioned in the forms before the concrete is placed. Afterwards, once the concrete has gained strength but before the service loads are applied, the cables are pulled tight, or tensioned, and anchored against the outer edges of the concrete.

FIGURE. 13

ADVANTAGESPost-tensioning, which is a form of pre-stressing, has several advantages over standard reinforcing steel:

It reduces or eliminates shrinkage cracking-therefore no joints, or fewer joints,

are needed

Cracks that do form are held tightly together

It allows slabs and other structural members to be thinner

It allows us to build slabs on expansive or soft soils

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It lets us design longer spans in elevated members, like floors or beams

SCOPE OF WORK There are five flyover in the project work is in progress.

1. FLYOVER 01 (Rawalpindi to Gujranwala city)

Length 301.5(m)

Piles 80

Pile Cap 15

Piers 15

Abutments 2

Spans 10TABLE. 02

2. FLYOVER O2 (Gujranwala to Rawalpindi)

Length 301.5(m)

Piles 66

Pile Cap 11

Piers 12

Abutments 2

Spans 10

TABLE. 03

3. FLYOVER 03 (Sialkot to Rawalpindi)Length 417.3(m)

Piles 64

Pile Cap 15

Piers 13

Abutments 2

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Spans 14

TABLE. 04

4. FLYOVER 04 (Lahore to Gujranwala city)

Length 564.41(m)

Piles 84

Pile Cap 20

Piers 18

Abutments 02

Spans 18TABLE. 05

5. FLYOVER O5 (Railway Bridge)

Length 80.05(m)

Piles 38

Pile Cap 04

Piers 06

Abutments 02

Spans 03

TABLE. 06

WORK PROGRESS

FLYOVER 1, 2, 3 & 4.PILES 100% COMPLETED 294 OUT OF 294

PILE CAP 100% COMPLETED 62 OUT OF 62

PIER 100% COMPLETED 62 OUT OF 62

ABUTMENT 100% COMPLETED 8 OUT OF 8

BOX GIRDER 20% IN PROGRESS 4 OUT OF 17

REINFORCE EARTH 50% IN PROGRESS 0.6 KM OUT OF 1.20 KM

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WALLTABLE. 07

RAILWAY BRIDGE PILES 100% COMPLETED 38 OUT OF 38

PILE CAP 100% COMPLETED 4 OUT OF 4

PIERS 100% COMPLETED 2 OUT OF 2

TRANSOM 50% IN PROGRESS 1 OUT OF 2

ABUTMENTS 50% IN PROGRESS 1 OUT OF 2

PRE-CAST GIRDER 100% COMPLETED 21 OUT OF 21

TABLE. 08

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