摘要
深基坑工程的开挖施工是一个动态的复杂过程,受到众多影响因素的制约,因此在不同地区的基坑施工中,很难找到适用的统一规律。以广东珠海某深基坑的施工为背景,结合现场的地质勘察资料,通过数值模拟方法,深入分析基坑开挖过程中的地下连续墙位移、基坑外地表变形以及内支撑的变形与受力情况。研究结果表明,在基坑开挖的初期,当开挖深度相对较小时,内支撑能够有效限制邻近建筑物的水平位移。然而,随着开挖深度的不断增加,其限制作用逐渐减弱。此外,内支撑对水平位移的限制效果明显优于竖向位移的限制效果,研究成果可为后续类似工程提供参考。
The excavation and construction of deep foundation pits is a dynamic and complex process,constrained by numerous influencing factors.As a result,it is challenging to identify a unified set of applicable rules for foundation pit construction across different regions.This study is based on the construction of a deep foundation pit in Zhuhai of Guangdong province,and combines on-site geological survey data with numerical simulation methods to conduct an in-depth analysis of the displacement of the underground diaphragm wall,surface deformation outside the foundation pit,and the deformation and stress conditions of the internal supports during the excavation process.The research results indicate that,in the initial stages of foundation pit excavation,when the excavation depth is relatively small,the internal supports can effectively limit the horizontal displacement of adjacent buildings.However,as the excavation depth continues to increase,their limiting effect gradually diminishes.Furthermore,the ability of the internal supports to restrict horizontal displacement is significantly better than that for vertical displacement.These findings can serve as a reference for similar projects in the future.
作者
方智淳
朱正国
Fang Zhichun;Zhu Zhengguo(College of Civil and Architectural Engineering,Tongling University,Tongling,Anhui 244061,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China)
出处
《黑龙江工业学院学报(综合版)》
2025年第6期129-134,共6页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
国家自然科学基金项目“灾毁隧道快速抢修新型支护结构作用机制研究”(项目编号:52478406)
安徽高校自然科学研究重点项目“基于均匀化理论的高地应力互层岩体隧道变形机理与破坏形式研究”(项目编号:2024AH051850)
铜陵学院校级科研重点项目“高地应力软硬互层隧道岩体变形机理与破坏形式研究”(项目编号:2023tlxyZD02)。
关键词
深基坑开挖
地下连续墙
地表变形
数值模拟
deep foundation pit excavation
underground continuous wall
surface deformation
numerical simulation
