土质边坡稳定性的整合分析

Integrated Analysis of Soll-slope Stability

将有限元方法和极限平衡法结合起来综合分析边坡稳定性,整合两者的优点,提出了综合法基本原理及边坡安全系数的计算程序.利用有限元软件ANSYS得出边坡最危险滑动面以及坡体内的应力和应变,在通过极限平衡条分理论求得边坡安全系数.算例表明综合法求得的边坡稳定安全系数与其它方法的计算结果相近,而且更加精确分析了各种方法对边坡稳定计算结果差别的影响因素,为边坡加固设计提供了依据.

Combining the finite element method with the limit equilibrium method, this paper analyzes the soil-slope stability comprehensively through each merit of them. A basic principled of integrate analysis method is put forward. And the calculation procedure of the slope safety factor is presented. It makes use of finite element method software ANSYS to get the most dangerous sliding face and the stress-stain in slope. Then the slope safety factor can be solved through the theory of limit equilibrium method of slices. The calculation shows that the result of safety factor is close to the one obtained by the integrated method and others. The factors which affect the calculation of the soil-slope stability because of different methods are analyzed precisely,which provides a basis for consolidating the sliding slope.