Numerical analysis of secant pile supporting deep foundation pit based on ABAQUS

Abstract

Abstract: Based on ABAQUS numerical analysis software, the stiffness equivalent principle is used to equivalent the occlusive pile supporting a deep foundation pit. The deformation of the pit bottom heave during unloading, the displacement of the support structure, and the variations in axial force of support in the unloading process of foundation pit excavation are analyzed numerically. A comparative validation is conducted using actual monitoring data. The results show that the stiffness equivalent principle can effectively capture the deformation characteristics of the foundation pit. The deformation results of the supporting structure and the surrounding environment obtained by the numerical analysis are in good agreement with the actual monitoring values. Therefore, this method can serve as the guidance for the actual construction of the foundation pit.

Key words: foundation pit excavation, occlusal pile support, numerical simulation, deformation of foundation pit

CLC Number:

TU443

DONG He-ping, DONG Jian-hua, WU Xiao-lei. Numerical analysis of secant pile supporting deep foundation pit based on ABAQUS[J]. Journal of Lanzhou University of Technology, 2024, 50(4): 121-128.

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