基坑开挖与围挡支护的数值模拟研究

为了研究基坑开挖及围挡支护对周围土体的影响,以某地铁站工程为例,采用有限元软件对基坑开挖及围挡支护过程进行模拟。结果表明:在坑底和边坡区域容易出现应力集中的现象,最大主应力主要集中在坑底和围护结构的两侧;基坑底部和基坑周围的土体有明显的隆起,最大水平位移发生在基坑的上半部分。

Research on Numerical Simulation of Foundation Pit Excavation and Retaining Support

In order to research the influence of foundation pit excavation and retaining support on the surrounding soil,taking a subway station project as an example,the finite element software is used to simulate the process of foundation pit excavation and retaining support.The results show that the stress concentration tends to occur at the bottom of the pit and the slope area,and the maximum principal stress mainly concentrates at the bottom of the pit and both sides of the retaining structure.The bottom of the foundation pit and the soil around the foundation pit have obvious swelling,and the maximum horizontal displacement occurs in the upper part of the foundation pit.