Research on horizontal bearing capacity of pile foundation based on friction effect theory

Abstract

Abstract: As the main foundation form of large-scale buildings (structures), pile foundations must ensure deformation control and structural stability. The analysis of its horizontal bearing capacity is a key step in the design of pile foundations. Based on the pile-soil friction effect theory, the expression of the resistance bending moment generated by friction forces is derived by the m method. Considering the mixed boundary conditions of pile-soil contact interface, the governing equations of pile deformation and internal forces are derived. A horizontal bearing capacity calculation method—referred to as the f_m-D method—is proposed, incorporating friction effects. The corresponding computational program was written in Mathematica. The correctness of f_m-D method was verified by experimental conditions and engineering examples, followed by a sensitivity analysis of parameters such as friction coefficient and pile diameter to pile bearing capacity.

Key words: horizontal bearing capacity, m method, pile-soil friction effect, resist bending moment

CLC Number:

TU473

DUAN Xin-guo, ZHU Yan-peng, YANG Kui-bin, FANG Guang-wen, WU Lin-ping, SHI Duo-bang. Research on horizontal bearing capacity of pile foundation based on friction effect theory[J]. Journal of Lanzhou University of Technology, 2025, 51(4): 114-121.

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