基于斜桩支护的框架结构基坑变形分析

doi:10.6040/j.issn.1672-3961.0.2021.076

山东大学学报 (工学版) ›› 2022, Vol. 52 ›› Issue (1): 58-65.doi: 10.6040/j.issn.1672-3961.0.2021.076

基于斜桩支护的框架结构基坑变形分析

张福海¹,周玉石²,刘学港³,秦承帅³,孙子正³,张一鸣^1*

1. 河北工业大学土木与交通学院, 天津 300401;2. 上海城地岩土设计有限公司, 上海 201800;3. 山东大学齐鲁交通学院, 山东济南 250061

发布日期:2022-02-21
作者简介:张福海(1997— ),男,山东莒县人,硕士研究生,主要研究方向为建筑与土木工程. E-mail:1936865878@qq.com. *通信作者简介:张一鸣(1984— ),男,上海人,教授,博士生导师,主要研究方向为岩土工程以及土木工程防灾减灾. E-mail:yiming.zhang@hebut.edu.cn
基金资助:
国家自然科学基金资助项目(51809069;51709258);中国博士后基金特别资助项目(2020T130377);山东省博士后基金创新资助项目(202001012)

Deformation analysis of frame structure foundation pit based on inclined pile support

ZHANG Fuhai¹, ZHOU Yushi², LIU Xuegang³, QIN Chengshuai³, SUN Zizheng³, ZHANG Yiming^1*

1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;
2. Shanghai Chengdi Geotechnical Design Co., Ltd., Shanghai 201800, China;
3. School of Qilu Transportation Engineering, Shandong University, Jinan 250061, Shandong, China;

Published:2022-02-21

摘要/Abstract

摘要： 基于数值分析方法与修正剑桥模型理论,针对土-斜桩-框架桩体系共同作用下基坑变形问题, 运用有限元软件ABAQUS模拟斜桩竖向沉降、地下连续墙水平侧移、地表竖向沉降、框架桩水平侧移的受力变形情况。在基坑施工过程中,当斜桩布置较为密集时,上部框架桩结构易受斜桩近距离作用,甚至存在因操作不规范导致的局部搭接,产生较长时间内共同作用,引起较大桩侧变形甚至结构沉降。通过数值分析工具,对多工况参数如斜桩夹角、框架桩尺寸、框架桩与斜桩间距进行参数敏感性分析,获得了结构的力学响应特征及长期变形规律。

关键词: 基坑支护, 斜桩结构, 桩土作用, 修正剑桥模型, 数值分析

中图分类号:

TU443

张福海,周玉石,刘学港,秦承帅,孙子正,张一鸣. 基于斜桩支护的框架结构基坑变形分析[J]. 山东大学学报 (工学版), 2022, 52(1): 58-65.

ZHANG Fuhai, ZHOU Yushi, LIU Xuegang, QIN Chengshuai, SUN Zizheng, ZHANG Yiming. Deformation analysis of frame structure foundation pit based on inclined pile support[J]. Journal of Shandong University(Engineering Science), 2022, 52(1): 58-65.

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基于斜桩支护的框架结构基坑变形分析

Deformation analysis of frame structure foundation pit based on inclined pile support

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