基于PLAXIS的深基坑支护的有限元分析

Finite Element Analysis for Deep Foundation Pit Support on PLAXIS

深基坑开挖支护作为岩土工程的一项基本课题,一直以来是研究的热点和难点.以重庆市沙坪坝区某一工程为研究对象,通过有限元分析软件PLAXIS对深基坑的开挖、支护全过程进行模拟分析,研究支护结构的内力变形情况.发现其水平位移、竖向位移均满足设计要求;发现支护结构弯矩剪应力均发生在其中部位置.

As a key project in rock wood engineering , deep foundation pit suppont is always the hot and difficult point of research, with a project in Shaping, Chongqing as the example, this paper made a model analysis on the digging and support of deep foundation pit through PLAXIS to research the inner deformation of the support structure. The results found that, the horizond and rertical displacement could meet the design standards, and the bending shear stress all lies in the middle pant.