摘要
以某地铁车站基坑标准段为研究对象,结合基坑开挖过程中周围土体沉降观测数据,利用FLAC3D有限元分析软件模拟基坑分步开挖过程,研究深基坑在开挖过程中周边土体的回弹规律,提出回弹上浮原因,为基坑支护设计方案优化提供理论参考。
Taking the standard section of foundation pit of a subway station as the research object,combined with the observation data of surrounding soil settlement in the process of foundation pit excavation,this paper uses FLAC3D finite element analysis software to simulate the step-by-step excavation process of foundation pit,studies the rebound law of surrounding soil in the process of deep foundation pit excavation,and puts forward the reasons for rebound and floating,so as to provide theoretical reference for the optimization of foundation pit support design scheme.
作者
门阳阳
MEN Yangyang(Shandong Transport Vocational College,Shandong Weifang 261206 China)
关键词
基坑
卸荷回弹
数值模拟
沉降监测
foundation pit
unloading rebound
numerical simulation
settlement monitoring
