土木与环境工程学报（中英文）2025，Vol.47Issue(4)：19-27,9.DOI:10.11835/j.issn.2096-6717.2024.019
基坑扩底承载式斜撑支护变形数值模拟研究
Numerical study on deformation of pit tilted strut of concrete-filled steel tube with belled bearing base
摘要
Abstract
Bottom-bearing steel pipe concrete inclined support technique is a promising method for foundation pit excavation.While its effectiveness is evident in various engineering cases,its underlying mechanism requires further investigation.This study establishes a numerical model using finite element simulation,validated against monitoring data from specific projects.It explores the deformation of the inclined support during excavation,revealing insights into its performance under different soil conditions and tilt angles.Findings indicate significant control over soil and support deformation,especially in soft soil areas.Increasing the tilt angle enhances lateral force resistance but raises project costs.Thus,selecting the appropriate angle is crucial based on specific project needs and soil conditions.关键词
基坑工程/有限元/扩底斜撑/地表沉降/基底隆起Key words
excavation/finite element/belled bearing base/ground settlement,basal heave分类
建筑与水利引用本文复制引用
仉文岗,严玉苗,袁运涛,陈春霞,牟云贞,黎泳钦..基坑扩底承载式斜撑支护变形数值模拟研究[J].土木与环境工程学报（中英文）,2025,47(4):19-27,9.基金项目
中国建筑西南勘察设计研究院科研项目(H20220430) （H20220430）
长江重庆航道工程局科技项目(H20230330) （H20230330）
国家自然科学基金(52078086) Southwest Survey and Design Institute of China Construction Cooperative Research Project(No.H20220430) （52078086）
Science and Technology Program of Yangtze River Chongqing Navigation Engineering Bureau(H20230330) （H20230330）
National Natural Science Foundation of China(No.52078086) （No.52078086）
