大直径圆筒结构墙前后土压力数值分析

为研究大直径圆筒结构墙前后土压力分布规律，完善大直径圆筒结构土压力的计算方法，采用有限元软件ABAQUS进行数值分析，土体的本构关系采用D-P模型，筒与土接触面模拟采用接触对算法，计算不同筒径和埋深下大直径圆筒结构的土压力，通过比较各种工况的计算结果，得出筒前及筒后竖向土压力随筒径以及埋深变化的分布规律，为相关设计提供一定依据。

Numerical analysis on earth pressure of front and back of wall on large diameter cylinder structures

To analyze the distribution rules about earth pressure of front and back of wall on large diameter cylinder structures, consummate the calculation method of the pressure on large diameter cylinder structures, the numerical analysis is done by using finite element software ABAQUS. The constructive relationship is described by D-P soil model, the contact pair algorithm is used to simulate the contact face between cylinder and soil, and the earth pressure is calculated while the cylinders have different diame- ters and buried depth. The calculated results of different conditions are compared and the distribution rules of vertical earth pressure on front and back of large diameter cylinder structures under different buried depth are summarized. The study is helpful for some related design.