Based on a simplified mechanical model, the stress distribution pattern in subsoils around tunnels due to train movement is investigated. In this model, the effects of rails, connection bolts, ballast, lining and foundation are taken into account. The initial stress state and the dynamic stress state of the subsoils induced by train loading are obtained from a two-dimensional finite-element calculation. After combining the above results with the empirical equation proposed by Chai and Miura in 2002, the cumulative plastic strain of subsoils and the long-term settlement of tunnels are obtained. The results show that the cumulative train-load-induced tunnel settlement increased, but at a decreasing rate. The cumulative settlement was 15·5 mm after 8 years, 60% of which occurred within the initial 6 months.
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Research Article|
November 11 2014
Evaluation of train-load-induced settlement in metro tunnels
Huai-Na Wu, BEng;
Huai-Na Wu, BEng
PhD Student
Department of Civil Engineering, Shanghai Jiao Tong University, and State Key Laboratory of Ocean Engineering, Shanghai, People's Republic of China
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Shui-Long Shen, PhD;
Shui-Long Shen, PhD
Professor
Department of Civil Engineering, Shanghai Jiao Tong University, and State Key Laboratory of Ocean Engineering, Shanghai, People's Republic of China
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Jin-Chun Chai, PhD;
Jin-Chun Chai, PhD
Professor
Department of Civil Engineering and Architecture, Saga University, Japan
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Dong-Mei Zhang, PhD;
Dong-Mei Zhang, PhD
Professor
Department of Geotechnical Engineering, Tongji University, Shanghai, People's Republic of China
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Ye-Shuang Xu, PhD
Ye-Shuang Xu, PhD
Associate Professor
Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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Publisher: Emerald Publishing
Received:
December 11 2013
Accepted:
September 23 2014
Online ISSN: 1751-8563
Print ISSN: 1353-2618
ICE Publishing: All rights reserved
2015
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering (2015) 168 (5): 396–406.
Article history
Received:
December 11 2013
Accepted:
September 23 2014
Citation
Wu H, Shen S, Chai J, Zhang D, Xu Y (2015), "Evaluation of train-load-induced settlement in metro tunnels". Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, Vol. 168 No. 5 pp. 396–406, doi: https://doi.org/10.1680/jgeen.13.00159
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