强度折减法在公路高边坡工程中的应用  

Application of Strength Reduction Method in Highway High Slope

作　　者：夏学锋[1] 王晓冉 

机构地区：[1]武汉理工大学交通学院,武汉市430063 [2]中国交通建设集团,北京市100088

出　　处：《公路》2013年第8期165-168,共4页Highway

摘　　要：有限元强度折减法,是通过不断降低岩土体强度使边坡达到极限破坏状态,从而计算得到边坡的破坏滑动面和强度储备安全系数。首先简单介绍了强度折减法的基本原理和理论,在此基础上,以某高速公路高边坡工程为例,具体阐述了该方法的相关应用。工程实例表明,该方法得到的滑带位置以及安全系数与传统的极限平衡法所得到的结果较为一致,表明了该方法的适用性和准确性。并且该方法还能进行边坡的应力、应变以及位移等分析,弥补了极限平衡法所存在的不足,具有较好的运用前景。Finite element shear strength reduction（SSR） method is a method to get the critical slip surface and safety factor of slopes through continuously reducing the applied shear strength of materials in the slope until it reaches its ultimate failure state. In this paper, the basic theory of SSR was introduced. On this basis, a highway slope was put forward as a example to illustrate the relative application of the method. The result of the example indicated that the critical slip surface and safety factor got from SSR method was nearly the same as that from limit equilibrium method, which proved its applicablity and accu- racy. Furthermore, SSR can also analyze the stress,strain and displacement of slope, which making up the shortcomings of limit equilibrium method,and has a great application prospect.

关 键 词：强度折减法 高边坡 稳定性评价 应用 

分 类 号：U416.1[交通运输工程—道路与铁道工程]