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Title: Three-dimensional seismic response of a cylindrical tunnel with voids behind the lining
Authors: Naotoshi, Yasuda  kyouindb  KAKEN_id
Kazuhiko, Tsukada
Toshihiro, Asakura
Author's alias: 保田, 尚俊
塚田, 和彦
Keywords: Tunnel
Void behind the lining
Elastodynamics
Seismic response
Three-dimensional analysis
Issue Date: Feb-2019
Publisher: Elsevier BV
Journal title: Tunnelling and Underground Space Technology
Volume: 84
Start page: 399
End page: 412
Abstract: Past experiences in Japan have suggested a high correlation between the presence of voids behind the tunnel lining and seismic damage of tunnels. To confirm this correlation from a theoretical perspective, this study derives three-dimensional elastic solutions for a deep cylindrical tunnel with a void subjected to obliquely incident seismic waves. The three-dimensional seismic response of the tunnel and the effect of voids on the response are investigated. Herein, a void is treated as a partial non-contact boundary between the lining and the ground, with negligible volume. The substructure method and the point-matching method are used to derive the solutions. Numerical results show that the presence of a void does not lead to a large stress concentration on the lining under an oblique-incidence of seismic waves. However, high correlation between large stress concentration on the lining caused by voids before an earthquake and seismic damage of tunnels is suggested. Based on this finding, reinforcement of the lining where large stress concentration has already occurred is crucial for preventing seismic damage of tunnels.
Rights: © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
The full-text file will be made open to the public on 1 February 2021 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/243224
DOI(Published Version): 10.1016/j.tust.2018.11.026
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