基于摩擦效应理论的桩基水平承载力研究

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (4): 114-121.

基于摩擦效应理论的桩基水平承载力研究

段新国^1,2,3, 朱彦鹏^*1,2,3, 杨奎斌¹, 房光文¹, 吴林平¹, 施多邦¹

1.兰州理工大学土木与水利工程学院, 甘肃兰州 730050;
2.兰州理工大学甘肃省土木工程防灾减灾重点实验室, 甘肃兰州 730050;
3.兰州理工大学西部土木工程防灾减灾教育部工程研究中心, 甘肃兰州 730050

收稿日期:2022-10-15 出版日期:2025-08-28 发布日期:2025-09-05
通讯作者: 朱彦鹏(1960-),男,甘肃庆阳人,教授,博导.Email:zhuyp1@163.com
基金资助:
国家自然科学基金(52368049),国家重点研发计划项目(2019YFD1101004),教育部长江学者创新团队支持计划项目(IRT_17R51),甘肃省高等学校产业支持计划项目(2020C-40)

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

DUAN Xin-guo^1,2,3, ZHU Yan-peng^1,2,3, YANG Kui-bin¹, FANG Guang-wen¹, WU Lin-ping¹, SHI Duo-bang¹

1. School of Civil and Hydraulic Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;
3. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou730050, China

Received:2022-10-15 Online:2025-08-28 Published:2025-09-05

摘要/Abstract

摘要： 桩基础作为大型建(构)筑物的主要基础形式,控制变形量、保证稳定性尤为重要,其水平承载力的分析是桩基设计的关键步骤.基于桩-土摩擦效应理论,利用m法推导出摩擦力产生的抵抗弯矩的表达式.考虑桩-土接触表面混合边界条件,推导出桩身变形和内力的控制方程,给出考虑摩擦效应的桩基水平承载力计算方法—f_m-D法.采用Mathematica编写相应计算程序,通过试验工况和工程实例验证f_m-D法的正确性,并分析摩擦系数、桩径等对桩身承载力的敏感性.

关键词: 水平承载力, m法, 桩-土摩擦效应, 抵抗弯矩

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

中图分类号:

TU473

段新国, 朱彦鹏, 杨奎斌, 房光文, 吴林平, 施多邦. 基于摩擦效应理论的桩基水平承载力研究[J]. 兰州理工大学学报, 2025, 51(4): 114-121.

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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