基于ABAQUS的咬合桩支护深基坑数值分析

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (4): 121-128.

基于ABAQUS的咬合桩支护深基坑数值分析

董和平^1,2,3, 董建华^*1,2, 吴晓磊^1,2

1.兰州理工大学土木工程学院, 甘肃兰州 730050;
2.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;
3.中核四〇四有限公司, 甘肃嘉峪关 735100

收稿日期:2021-05-26 出版日期:2024-08-28 发布日期:2024-08-30
通讯作者: 董建华(1980-),男,甘肃甘谷人,博士,教授,博导.Email:djhua512@163.com
基金资助:
甘肃建设科技公关项目(JK2018-40,JK2019-08)

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

DONG He-ping^1,2,3, DONG Jian-hua^1,2, WU Xiao-lei^1,2

1. School of Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou Univ. of Tech., Lanzhou 730050, China;
3. China Nuclear 404 Co., Ltd., Jiayuguan 735100, China

Received:2021-05-26 Online:2024-08-28 Published:2024-08-30

摘要/Abstract

摘要： 基于ABAQUS数值分析软件,利用刚度等效原则对咬合桩支护深基坑进行等效.对基坑开挖卸荷过程中坑底隆起变形、支护结构位移及支撑轴力变化进行分析,并与实际监测数据进行对比验证.研究结果表明:采用刚度等效原则进行咬合桩支护分析能够反映基坑的变形特征,数值分析得出的支护结构和周围环境的变形结果与实际监测值具有良好的一致性,可作为基坑实际施工的指导.

关键词: 基坑开挖, 咬合桩支护, 数值模拟, 坑底隆起变形

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

中图分类号:

TU443

董和平, 董建华, 吴晓磊. 基于ABAQUS的咬合桩支护深基坑数值分析[J]. 兰州理工大学学报, 2024, 50(4): 121-128.

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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