Repair and rehabilitation of a cable stayed bridge

Table of Contents

• Abstract
• Acknowledgement
• Table of Contents
• Chapter-1 INTRODUCTION
  • 1.1 General Remarks
  • 1.1.1 History of cable stayed bridge
  • 1.1.2 First cable stayed bridge
  • 1.1.3 First cable stayed bridge in U.S.A.
  • 1.1.4 Comparison with suspension bridge
  • 1.1.5 Key advantages of cable stayed bridge
  • 1.1.6 Types of cable stayed bridge
  • 1.1.7 Parts of cable stayed bridge
    • 1.1.7.1 Deck
    • 1.1.7.2 Box girder
    • 1.1.7.3 Prestressing concrete
    • 1.1.7.4 Foundation
    • 1.1.7.5 Pylon
    • 1.1.7.6 Stay cables
  • 1.1.8 Designing
  • 1.1.9 Construction
  • 1.1.10 Test on stay cables
  • 1.1.11 Cable stayed bridge across Chambal river
  • 1.1.12 General details of the project
  • LITRATURE RIVEW
  • 1.2 General remarks
  • 1.2.1 Review of work done in this field
  • 1.2.3 Objective of the study
• Chapter – 2 MODELING OF CABLE STAYED BRIDGE
  • 2.1 General remark
  • 2.2 Static modeling
    • 2.2.1 Governing equation for deflected shape
    • 2.2.2 Cables under its own weight
    • 2.2.3 Cable subjected to UDL
• Chapter -3 CABLE STAYED BRIDGE ACROSS CHAMBAL RIVER: CASE STUDY
  • 3.1 Silent features of the bridge
    • 3.1.1 General arrangement
    • 3.1.2 Deck section
    • 3.1.3 Pylon
    • 3.1.4 Piers
    • 3.1.5 Foundation
  • 3.2 Main span erection
  • 3.3 Bearing
  • 3.4 Mode of construction
  • 3.5 Comparison with general mode of construction
  • 3.6 Comparison with span-by –span mode of construction
  • 3.7 Bearing support during failure
  • 3.8 Detail of collapse
  • 3.9 Causes of collapse
  • 3.10 View of various agencies about mechanism of collapse
  • 3.11 View of committee
• Chapter -4 REPAIR AND REHABILITAION
  • 4.1 General Remarks
  • 4.2 Design requirements
  • 4.3 Factor of strength (limit state)
  • 4.4 Cable condition rating
  • 4.5 Rehabilitation strategy and cost rating
  • 4.6 Replacement Cable Design
  • 4.7 Super structure modification
  • 4. 8 Corrosion protection
  • 4.9 Wind load consideration
  • 4.10 Temporary cable design
  • 4.11 Security and antivandalism
  • 4.12 Major construction faults in Chambal bridge
• REFERENCES

Objectives and Key Themes

The dissertation aims to investigate the failure of a cable-stayed bridge across the Chambal River in Kota, India. It will analyze the causes of the collapse and explore the repair and rehabilitation strategies for such failures. The study also includes static and dynamic modeling of cable-stayed bridges.

• Failure analysis of cable-stayed bridges
• Structural modeling and analysis techniques
• Repair and rehabilitation strategies for damaged cable-stayed bridges
• Construction methodologies and their impact on bridge safety
• Case study of the Chambal River bridge collapse

Chapter Summaries

Chapter-1 INTRODUCTION: This chapter provides a general introduction to cable-stayed bridges, tracing their history, comparing them to suspension bridges, and outlining their advantages. It details the various components of a cable-stayed bridge, including the deck, box girder, foundation, pylon, and stay cables. The chapter also covers design and construction practices, focusing particularly on testing methods for stay cables and concluding with a case study introduction of the Chambal River bridge. The literature review section summarizes relevant previous research on cable-stayed bridge design, construction, and failure analysis. It discusses different modeling techniques and the importance of considering factors like wind and traffic loads. Finally, it states the objectives of the current study.

Chapter – 2 MODELING OF CABLE STAYED BRIDGE: This chapter delves into the modeling techniques used for analyzing cable-stayed bridges. It focuses on static analysis, specifically examining the governing equations for the deflected shape of a cable under different load conditions, including its own weight and a uniformly distributed load. The chapter details the mathematical derivations and explains the different shapes (catenary and parabolic) assumed by the cables under these loadings, emphasizing the practical approximations used in analysis.

Chapter -3 CABLE STAYED BRIDGE ACROSS CHAMBAL RIVER: CASE STUDY: This chapter presents a detailed case study of the collapsed cable-stayed bridge across the Chambal River. It describes the bridge's salient features, including its general arrangement, deck section, pylons, piers, and foundation. The chapter explains the main span erection method, the bearing system at pier P4, and compares the construction mode with other methods. A comprehensive account of the collapse, including the details of the failure, the causes, and the perspectives of different agencies involved in the project is given. The views of the expert committee that investigated the incident are also presented and thoroughly analyzed, highlighting the factors contributing to the catastrophic failure.

Keywords

Cable-stayed bridge, bridge collapse, failure analysis, structural modeling, dynamic analysis, repair, rehabilitation, construction faults, Chambal River bridge, case study, design, construction, stay cables, pylon, foundation.

Frequently Asked Questions: Cable-Stayed Bridge Collapse Case Study

What is the main topic of this document?

This document is a comprehensive overview of a dissertation investigating the failure of a cable-stayed bridge across the Chambal River in Kota, India. It analyzes the causes of the collapse, explores repair and rehabilitation strategies, and includes static and dynamic modeling of cable-stayed bridges.

What are the key themes explored in the dissertation?

The key themes include failure analysis of cable-stayed bridges, structural modeling and analysis techniques, repair and rehabilitation strategies for damaged structures, construction methodologies and their impact on bridge safety, and a detailed case study of the Chambal River bridge collapse.

What is covered in Chapter 1?

Chapter 1 provides a general introduction to cable-stayed bridges, including their history, comparison with suspension bridges, advantages, components (deck, box girder, foundation, pylon, stay cables), design and construction practices, stay cable testing, and an introduction to the Chambal River bridge case study. A literature review summarizes previous research on cable-stayed bridge design, construction, and failure analysis, and defines the study's objectives.

What is the focus of Chapter 2?

Chapter 2 focuses on modeling techniques for analyzing cable-stayed bridges. It concentrates on static analysis, examining governing equations for cable deflection under different load conditions (self-weight and uniformly distributed load), and the mathematical derivations involved in analyzing cable shapes (catenary and parabolic).

What does Chapter 3 cover?

Chapter 3 presents a detailed case study of the collapsed Chambal River bridge. It describes the bridge's features (arrangement, deck, pylons, piers, foundation), main span erection, bearing system, construction mode comparisons, and a comprehensive account of the collapse, including details, causes, and perspectives from various agencies and the expert committee.

What topics are discussed in Chapter 4?

Chapter 4 addresses the repair and rehabilitation of the bridge. It covers design requirements, strength factors, cable condition rating, rehabilitation strategies and costs, replacement cable design, superstructure modification, corrosion protection, wind load considerations, temporary cable design, security measures, and major construction faults identified in the Chambal bridge.

What are the objectives of this study?

The dissertation aims to investigate the failure of the Chambal River cable-stayed bridge, analyze the causes of the collapse, and explore repair and rehabilitation strategies. It also incorporates static and dynamic modeling of cable-stayed bridges.

What keywords are associated with this research?

Keywords include cable-stayed bridge, bridge collapse, failure analysis, structural modeling, dynamic analysis, repair, rehabilitation, construction faults, Chambal River bridge, case study, design, construction, stay cables, pylon, and foundation.

What type of analysis is used in this study?

The study utilizes both static and dynamic modeling techniques to analyze the cable-stayed bridge. A detailed failure analysis is also conducted using the case study of the Chambal River bridge collapse.

Where can I find more details about the Chambal River bridge collapse?

Chapter 3 provides a comprehensive case study detailing the collapse of the Chambal River bridge, including its causes, the perspectives of involved agencies, and the findings of the expert committee investigating the incident.