用有限元强度折减法进行加筋土挡土墙稳定性分析

加筋土挡土墙边坡是一种新型的边坡加固形式,传统的理论分析主要是考虑力的平衡关系,因此还有不少的缺陷,而有限元分析不仅满足力与位移的平衡关系,而且考虑了筋带与土体的协调变形作用,模拟的结果能使人们方便地掌握挡墙的整体与局部变化。结合某加筋土挡土墙的实例,利用有限元对其进行了数值模拟,用强度折减法计算了边坡的安全系数,并与极限平衡进行比较,对类似的工程有一定的指导作用。

Stability Analysis on Reinforced Retaining Wall by Strength Reduction of FEM

The method of reinforced earth walls is a new form in strengthening slopes. The traditional theory analysis reinforced earth walls considers strength chiefly and it has many deficiencies, but finite element method does not only satisfy the balance of strength and displacement, but also consider the coordination effect of shape change GAT material and soil, and we can grasp the part and the whole change better from the result. This paper uses the strength reduction of FEM analyzes the safety coefficient of a reinforced retaining wall and compares with the traditional theory, and it can guide the similar engineering.