Sprayed Concrete Lined Tunnels

Alun Thomas

• Publisher: CRC Press
• Year: 2019
• eBook ISBN: 9780429559587
• Edition: 2
• Topic: Technology & Engineering
• Subtopic: Civil Engineering
• Index: Technology & Engineering

Sprayed concrete lined (SCL) tunnels are growing rapidly in popularity due to their versatility. The design and construction of both hard rock and soft ground tunnels has been revolutionised by the advent of the SCL method and now the use of permanent sprayed concrete linings has unlocked the true potential of the method to minimise construction costs and times. Yet the complex early age behaviour of the sprayed concrete makes the design difficult and requires a robust management system during construction. Consequently the great advantages of the method must be balanced against the risks, as a few high-profile tunnel collapses have illustrated.

Practising engineers on site, in the design office or in client organizations will find this book an excellent introduction. It covers all aspects of SCL tunnelling – from the constituents of sprayed concrete to detailed design and management during construction. Although there is a close interdependence between all the facets of sprayed concrete, few engineers have the right breadth of experience and expertise to cover all of them. This urgently needs to be transferred to the wider engineering community as SCL tunnels play an increasingly important role in the delivery of the underground infrastructure which modern urban life demands.

In this second edition, beyond a general updating to reflect new developments, the sections on permanent sprayed concrete, the innovative technology of spray applied waterproofing membranes, fibre reinforcement (both steel and macrosynthetic) and composite lining design have been expanded. Sustainability and environmental impact are addressed in a new section.

Table of contents

• Cover
• Half-Title
• Title
• Copyright
• Dedication
• Contents
• List of Figures
• List of Tables
• Preface
• Disclaimer
• Acknowledgements
• Author
• Abbreviations
• 1 What is an SCL tunnel?
• 2 Sprayed concrete
• 3 Construction methods
• 4 Design approaches
• 5 Modelling sprayed concrete
• 6 Detailed design
• 7 Construction management
• Appendix A: The evolution of mechanical properties of sprayed concrete with time
• Appendix B: Nonlinear elastic constitutive model for sprayed concrete (after Kostovos & Newman 1978)
• Appendix C: Plasticity models for sprayed concrete
• Appendix D: Creep models for sprayed concrete
• Appendix E: Key to figures from Thomas (2003)
• Appendix F: Thermo-chemo-mechanical constitutive model for sprayed concrete
• Appendix G: Frequency of testing from Austrian guidelines*
• Bibliography
• Index