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Simulating composite behaviour in SCL tunnels with sprayed waterproofing membrane interface : a state-of-the-art review

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Su, Jiang and Bloodworth, Alan G. (2019) Simulating composite behaviour in SCL tunnels with sprayed waterproofing membrane interface : a state-of-the-art review. Engineering Structures, 191 . pp. 698-710. doi:10.1016/j.engstruct.2019.04.067

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Official URL: https://doi.org/10.1016/j.engstruct.2019.04.067

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Abstract

Introduction of sprayed waterproofing has led to innovation of composite sprayed concrete lined (SCL) tunnels, where placing the waterproofing between primary and secondary layers gives potential for composite structural action, by transmission of tension, compression and shear stresses across the interface. Numerical analysis is required to design such structures taking into account soil-structure interaction and staged construction, but there is currently very limited guidance on how to conduct such analyses.

This paper reviews use of numerical analysis to simulate composite SCL tunnels, focussing on soft ground tunnelling. It introduces types of sprayed membrane, their benefits in design and current industry practice for simulating the sprayed membrane interface. Numerical strategies for simulating composite action and their verification against laboratory test data are then described. Recommendations are made of design principles to optimise design of SCL tunnels with spray-applied waterproofing. Further opportunities for research on this topic are discussed.

Item Type: Journal Article
Alternative Title:
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Waterproofing , Shotcrete-lined tunnels, Tunneling
Journal or Publication Title: Engineering Structures
Publisher: Elsevier Science Ltd.
ISSN: 0141-0296
Official Date: 15 July 2019
Dates:
DateEvent
15 July 2019Published
6 May 2019Available
23 April 2019Accepted
Volume: 191
Page Range: pp. 698-710
DOI: 10.1016/j.engstruct.2019.04.067
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
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