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CLC number: TU433

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 0000-00-00

Cited: 5

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.1 P.50-57

http://doi.org/10.1631/jzus.A061434


Environmental effects induced by excavation


Author(s):  Yu-qi LI, Jian ZHOU, Kang-he XIE

Affiliation(s):  Department of Civil Engineering, Shanghai University, Shanghai 200072, China; more

Corresponding email(s):   liyuqi2000@hotmail.com, liyuqi2000@shu.edu.cn

Key Words:  Environmental effect, Excavation, Deformation, Excess porewater pressure



Abstract: 
Based on 3D Biot’s consolidation theory and nonlinear Duncan-Chang’s model, a 3D FEM (finite element method) program is developed considering the coupling of groundwater seepage and soil skeleton deformation during excavation. The comparison between the analysis result considering the variation of water head difference and that without considering it shows that the porewater pressure distribution of the former is distinctly different from that of the latter and that the foundation pit deformations of the former are larger than those of the latter, so that the result without considering the variation of water head difference is unreliable. The distribution rules of soil horizontal and vertical displacements around the pit and excess porewater pressure are analyzed in detail in time and space, which is very significant for guiding underground engineering construction and ensuring environment safety around the pit.

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