边坡应力重塑作用的模拟分析

Simulation analysis of stress remoulding on excavated slope

在开挖边坡上施加重塑应力,能够改善边坡土体受力状况,增强边坡的稳定性。文章通过具体算例的模拟,分析边坡开挖和重塑过程中土体应力的变化规律,并采用有限元强度折减法计算重塑后边坡的安全系数,从而对应力重塑的效果作出定量评价;同时,通过变换重塑力的大小和方向,寻找出特定边坡应力重塑的最佳加载方式,为工程实践提供指导。

Exerting remoulding stress on excavated slope can improve its stress state and reinforce its stability.Through the simulation of specific example,this paper analyzes the variation regularity of soil stress in the process of excavation and remoulding,and works out the safety factor of slope stress remoulded by strength reduction finite element method,then makes quantitative evaluation on the effect of stress remoulding.Meanwhile,with the variation of direction and magnitude of remoulding stress,the best way of imposing remoulding stress on special slope can be found,thus directing engineering practice.