基于强度折减法的均质高边坡稳定性分析

Analysis on Stability of Homogeneous High Slope Based on Strength Reduction Method

通过建立有限差分数值模型,采用强度折减法对临离高速公路均质高边坡稳定性进行了系统分析。将强度折减法计算得到的边坡安全系数与传统的有限单元应力法计算结果进行对比,结果表明:两者安全系数基本相同,从而验证了该计算方法的合理性。最后,分析了粘聚力、内摩擦角以及剪胀角等重要参数对边坡安全系数的影响。

With a finite difference model established, the stability of homogeneous high slop along Linxian-Lishi Highway is systematically analyzed by strength reduction method, and the result of the safety factor calculated is compared with the result calculated by traditional finite element method. The study result shows that the safety factors calculated by both methods are almost the same, which demonstrates the reasonability of the method herein. Finally, how the important parameters, such as soil cohesion, internal friction angle and dilatancy angle, affect the safety factor is analyzed.