基于强度折减法和极限平衡法的含软弱夹层边坡的稳定性分析研究

Stability Analysis of the Slope with Inherent Weak Zones Based on Limit Equilibrium and Strength Reduction Methods

基于强度折减法和极限平衡法对二维边坡稳定性问题进行了系统性研究。针对不同类型边坡,分别采用2种方法对其安全系数与滑移面进行对比研究。对于各向同性边坡,2种方法能够很好地吻合。而对于软弱夹层边坡,2种方法的差异较大。但当软弱夹层范围进一步扩大,2种方法求得的临界滑移面将会非常接近。

The paper presents a comprehensive study on slope stability problems by considering the strength reduction method(SRM)and limit equilibrium method(LEM).Then,the SRM and LEM are considered to study the factors of safety and slip surfaces for different slopes.Regarding the homogenous slope,the results by these two methods can match very well.However,for the non-homogenous slope including weak zones,the difference between the two methods is very large.When the weak zone is increased,the two methods can calculate a similar slip surface.