Study on Influencing Factors of Deep Foundation Pit Deformation under Surcharge

DOI: https://doi.org/10.62517/jcte.202406102

Author(s)

Cheng Cao1,*, Xinyu Du2

Affiliation(s)

1China Construction Fourth Engineering Division Corp. Ltd, Xi’an 710065, Shaanxi, China 2Xi’an University of Technology, Xi’an 710048, Shaanxi, China *Corresponding Author

Abstract

The surrounding piles of deep foundation pit(FP) construction site will have an adverse impact on the stability of the FP. Therefore, this paper uses COMSOL finite element software to build the foundation pit model as an example. By changing the size of the piles, the position of the support layout and the embedment depth of the supporting piles, it analyzes the influence of the factors influencing the loading and deformation control on the excavation deformation rule of the FP. The conclusion is as follows: when the pile position is fixed, the horizontal displacement of FP supporting pile and the surrounding surface settlement increase with the increase of the pile load. When the size of the pile remains constant, the horizontal displacement of the foundation pit supporting pile decreases as the pile is far away from the FP, and the position where the maximum surface settlement appears corresponds to the position of the pile.

Keywords

Surcharge; Foundation Pit Excavation; Horizontal Displacement; Ground Settlement

References

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