Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)

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Stability and deformation control of deep foundation pits of half covered excavation subway in soft soil

Authors
Jianpeng Qin1, Jie Yuan1, *, Xiang Xiao1, Yiheng Pan2
1China Construction Infrastructure Co., Ltd., Beijing, 100044, China
2College of Harbour and Coastal Engineering, Jimei University, Xiamen, 361021, China
*Corresponding author. Email: cscic_yj@163.com
Corresponding Author
Jie Yuan
Available Online 14 May 2024.
DOI
10.2991/978-94-6463-415-0_6How to use a DOI?
Keywords
numerical simulation; foundation pit; excavation; deformation; soft soil
Abstract

A three-dimensional analysis model was established by finite element simulation to study the deformation and internal force changes of the cover plate, enclosure structure, support system, and surrounding soil during the excavation process of deep foundation pit at the Tatou Station of Fuzhou Metro Line 4 in soft soil. A corresponding theoretical basis for the excavation and support of the foundation pit project was provided. It was found that the maximum horizontal displacement of the retaining structure gradually develops downwards during excavation progresses. The maximum uplift of the base is 26.63 mm, and the surface settlement on the cover side of excavation is 60% of that on the open side. The closer the supporting structure is to the bottom of the pit, the greater the change in axial force is as the excavation of the foundation pit.

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 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
14 May 2024
ISBN
10.2991/978-94-6463-415-0_6
ISSN
2589-4943
DOI
10.2991/978-94-6463-415-0_6How 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  - Jianpeng Qin
AU  - Jie Yuan
AU  - Xiang Xiao
AU  - Yiheng Pan
PY  - 2024
DA  - 2024/05/14
TI  - Stability and deformation control of deep foundation pits of half covered excavation subway in soft soil
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 42
EP  - 49
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_6
DO  - 10.2991/978-94-6463-415-0_6
ID  - Qin2024
ER  -