板-土三维等厚接触单元模型及其应用

Model of Three Dimensional Constant Thickness Contact Interface Element between Plate and Soil and Its Application

推导了板－ 土三维等厚接触单元的单元刚度矩阵，提出了不同开挖深度下厚度的确定方法，并以上海某深基坑开挖工程为例，分析了不同厚度的等厚单元对围护墙体水平位移的影响．结果表明。

The element stiffness matrix of three-dimensional constant thickness contact interface element between plate and soil is obtained.The method of determining the thickness is proposed under the condition of different depth of excavation.Taking a deep excavation project in Shanghai as an example,the effects of several constant thickness elements to displacement are analyzed.The results show that the calculated values of displacement of the support wall are in better agreement with the measured values,using constant thickness element suitable for different depth of excavation.