Kampas, G, Knappett, JA, Brown, MJ et al. (3 more authors) (2020) Implications of volume loss on the seismic response of tunnels in coarse-grained soils. Tunnelling and Underground Space Technology, 95. 103127. ISSN 0886-7798
Abstract
This paper examines the seismic response of a “horseshoe–shaped” tunnel, inspired by a recently constructed Metro tunnel in Santiago, Chile. A FE analysis has been conducted, investigating the effect of soil density, apparent cohesion, the interface between the tunnel and the surrounding soil, the intensity of the seismic excitation and the effect of volume loss due to tunnel construction on the seismic behaviour of tunnels. The presence of apparent cohesion leads to a reduction of tunnel distress and to smaller post-earthquake ground settlements over a reduced distance from the tunnel. The consideration of volume loss does not significantly affect the acceleration field around the tunnel, but does beneficially decrease the lining forces. Furthermore, although it leads to an increase of the pre-earthquake settlements, it is found to decrease the co-seismic settlements. Finally, it was found that the most conservative model regarding the design detailing of the tunnel lining would be considering a rough interface, zero cohesion, and negligible volume loss (i.e., an ideally-excavated tunnel).
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/N03435X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Dec 2019 11:39 |
Last Modified: | 05 Dec 2019 11:39 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.tust.2019.103127 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:154211 |