Forth Replacement Crossing: Forth Road Bridge Feasibility of Multi-modal Corridor

Report on Study
August to October 2008

This document is also available in pdf format (3.5mb)

Contents

Bibliography and Workstream Timeline

1 Introduction
1.1 Introduction
1.2 Scope of this report
1.3 Limitations
1.4 Functional Definitions
1.5 Analytical Studies

2 Description of the Existing Bridge
2.1 General Arrangement
2.2 Original Functionality
2.3 Main Bridge Deck System and Articulation
2.4 Towers

3 Loading
3.1 Design (1964) Dead Loading
3.2 Design (1964) Traffic and Pedestrian Loading
3.3 Design (1964) Environmental Loading
3.4 Traffic Loading for the Study
3.5 Footway/Cycleway Loading
3.6 Design Traffic and Footway Loading
3.7 Railway Live Loading
3.8 Dead Loading Associated with the Railway

4 Tram and Light Railway Issues
4.1 Definitions
4.2 Tram and Light Railway Functional Characteristics
4.3 Rail System
4.4 Derailment Containment
4.5 Emergency and Maintenance Walkways
4.6 Parapets and Barriers

5 Conceptual Options
5.1 Assumed Fundamental Constraints
5.2 Measures to Mitigate Load Changes
5.3 Functional Constraints
5.4 Particular Measures
5.5 Catalogue of Functional Options for the Main Bridge
5.6 Main Bridge – Changes in Dead Load
5.7 Approach Spans – Changes in Dead Load
5.8 Summary – Changes in Dead Load

6 Response of Bridge to Changes in Loading
6.1 Methodology
6.2 Analytical Study
6.3 Comparison of Various Loading Patterns
6.4 Transverse Behaviour
6.5 Approach Viaducts

7 The Rail Movement Joint
7.1 The issue
7.2 Evidence of Other Existing Bridges
7.3 Conclusion

8 Conclusions
8.1 Summary
8.2 Recommendations
8.3 Ongoing study

Appendix A - Drawings
Appendix B - References

No part of this report may be copied or reproduced by any means without prior written permission from Jacobs Arup – Jacobs UK Limited and Ove Arup & Partners International Limited Consortium. If you have received this report in error, please destroy all copies in your possession or control and notify Jacobs Arup.

This report has been prepared for the exclusive use of the commissioning party and unless otherwise agreed in writing by Jacobs Arup, no other party may use, make use of or rely on the contents of this report. No liability is accepted by Jacobs Arup for any use of this report, other than for the purposes for which it was originally prepared and provided.

Opinions and information provided in the report are on the basis of Jacobs Arup using due skill, care and diligence in the preparation of the same and no warranty is provided as to their accuracy.

It should be noted and it is expressly stated that no independent verification of any of the documents or information supplied to Jacobs Arup has been made.