Proceedings of the 2024 7th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA 2024)

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Study on the Influence of Deep Foundation Pit Excavation on Existing Tunnels

Authors
Yang Zhai1, *, Longyan Wang2, Qingyuan Tan3, Jinchang Wang4, Yazhen Sun5
1Hangzhou Shangcheng District Urban Construction Development Group Co. Ltd, Hangzhou, 310027, China
2School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
3Zhejiang Design Institute of Water Conservancy & Hydroelectirc Power CO, LTD, Zhejiang, Hangzhou, 310027, China
4Institute of Transportation Engineering, Zhejiang University, Hangzhou, 310027, China
5School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, 110168, China
*Corresponding author. Email: 9834220@qq.com
Corresponding Author
Yang Zhai
Available Online 28 September 2024.
DOI
10.2991/978-94-6463-514-0_15How to use a DOI?
Keywords
excavation of foundation pit; stratigraphic structure method; tunnel deformation; existing tunnel
Abstract

The three-dimensional numerical model of station, tunnel and foundation pit is established by using the formation structure method. Considering the interaction between soil and structure, the dewatering of foundation pit and the spatio-temporal effect of foundation pit excavation, the whole construction process is calculated and analyzed, and the tunnel displacement and the response results of the soil pressure of the segments are obtained. The displacement will be used as the external load in the second stage of subsequent analysis. Based on the parameter sensitivity analysis of the influence of deep pit excavation on adjacent station and tunnel structure, the influence of tunnel distance and buried depth on tunnel deformation is discussed. The results show that the finite element simulation results are basically consistent with the measured results. The maximum horizontal displacement of the tunnel is greater than the maximum vertical displacement. The horizontal displacement of the deep tunnel is slightly greater than that of the shallow tunnel, and the vertical displacement is slightly smaller than that of the shallow tunnel.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 7th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA 2024)
Series
Advances in Engineering Research
Publication Date
28 September 2024
ISBN
978-94-6463-514-0
ISSN
2352-5401
DOI
10.2991/978-94-6463-514-0_15How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yang Zhai
AU  - Longyan Wang
AU  - Qingyuan Tan
AU  - Jinchang Wang
AU  - Yazhen Sun
PY  - 2024
DA  - 2024/09/28
TI  - Study on the Influence of Deep Foundation Pit Excavation on Existing Tunnels
BT  - Proceedings of the 2024 7th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA 2024)
PB  - Atlantis Press
SP  - 135
EP  - 144
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-514-0_15
DO  - 10.2991/978-94-6463-514-0_15
ID  - Zhai2024
ER  -