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Causation Identification and Control Measures of Deformation by Integrated Dewatering-Excavation Process Simulation of a T-Shaped Deep Foundation Pit

Zhang, Yege ; Yi, Lixin ; Zhang, Linus LU orcid ; Yang, Yongpeng ; Hao, Xin ; Li, Hui LU and Ma, Huanfa (2022) In Water (Switzerland) 14(4).
Abstract

Construction of subway line intersection stations will become more and more popular in the future. Research on the deformation characteristics in the construction process is the best way to ensure the safety of the foundation pit itself, the surrounding buildings, and adjacent subway stations. In this paper, the deformation characteristics of a T-shaped subway foundation pit during construction are studied by an integrated dewatering-excavation three-dimensional numerical simulation method. The results show that the main causation of the surface settlement around the foundation pit is the stratum compression caused by dewatering, and the main causation of the deformation of the diaphragm wall and the existing subway station is the soil... (More)

Construction of subway line intersection stations will become more and more popular in the future. Research on the deformation characteristics in the construction process is the best way to ensure the safety of the foundation pit itself, the surrounding buildings, and adjacent subway stations. In this paper, the deformation characteristics of a T-shaped subway foundation pit during construction are studied by an integrated dewatering-excavation three-dimensional numerical simulation method. The results show that the main causation of the surface settlement around the foundation pit is the stratum compression caused by dewatering, and the main causation of the deformation of the diaphragm wall and the existing subway station is the soil deformation caused by excavation unloading. It is suggested that constructing a high-quality diaphragm wall, controlling the water level within the excavation foundation pit, strengthening the monitoring, and timely cement pouring of the bottom plate are key countermeasures to reduce the deformation. The research results of this paper have reference significance for similar projects.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Countermeasure of deformation, Deformation, Dewatering, Foundation pit excavation, Numerical simulation
in
Water (Switzerland)
volume
14
issue
4
article number
535
publisher
MDPI AG
external identifiers
  • scopus:85125801168
ISSN
2073-4441
DOI
10.3390/w14040535
language
English
LU publication?
yes
additional info
Funding Information: Funding: This research was funded by China Communications Construction Company (CCCC) First Highway Engineering Group Co. Ltd. (2021-KJYF-B-11). Funding Information: Acknowledgments: This research was funded by China Communications Construction Company (CCCC) First Highway Engineering Group Co. Ltd. (2021-KJYF-B-11). Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
id
f742dcfd-04ff-4090-b9ae-1bfacd943190
date added to LUP
2022-03-20 12:11:06
date last changed
2022-04-20 19:57:46
@article{f742dcfd-04ff-4090-b9ae-1bfacd943190,
  abstract     = {{<p>Construction of subway line intersection stations will become more and more popular in the future. Research on the deformation characteristics in the construction process is the best way to ensure the safety of the foundation pit itself, the surrounding buildings, and adjacent subway stations. In this paper, the deformation characteristics of a T-shaped subway foundation pit during construction are studied by an integrated dewatering-excavation three-dimensional numerical simulation method. The results show that the main causation of the surface settlement around the foundation pit is the stratum compression caused by dewatering, and the main causation of the deformation of the diaphragm wall and the existing subway station is the soil deformation caused by excavation unloading. It is suggested that constructing a high-quality diaphragm wall, controlling the water level within the excavation foundation pit, strengthening the monitoring, and timely cement pouring of the bottom plate are key countermeasures to reduce the deformation. The research results of this paper have reference significance for similar projects.</p>}},
  author       = {{Zhang, Yege and Yi, Lixin and Zhang, Linus and Yang, Yongpeng and Hao, Xin and Li, Hui and Ma, Huanfa}},
  issn         = {{2073-4441}},
  keywords     = {{Countermeasure of deformation; Deformation; Dewatering; Foundation pit excavation; Numerical simulation}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{4}},
  publisher    = {{MDPI AG}},
  series       = {{Water (Switzerland)}},
  title        = {{Causation Identification and Control Measures of Deformation by Integrated Dewatering-Excavation Process Simulation of a T-Shaped Deep Foundation Pit}},
  url          = {{http://dx.doi.org/10.3390/w14040535}},
  doi          = {{10.3390/w14040535}},
  volume       = {{14}},
  year         = {{2022}},
}