边坡安全系数的有限元计算方法对比研究  

Comparative Study of Safety Factor Calculation for Slope by Finite Element Method

作　　者：曹伟 李文静 张红芬 CAO Wei;LI Wen-jing;ZHANG Hong-fen(School of Architectural Engineering, North China Institute of Science and Technology, Beijing 101601, China;School of Transportation Science and Engineering, l：~eihang University, I~ijing 100181, China;School of Mechanical Engineering, Yanjing Institute of Technology, Beijing 101601, China)

机构地区：[1]华北科技学院建筑工程学院,北京市101601 [2]北京航空航天大学交通科学与工程学院,北京市100191 [3]燕京理工学院机电工程学院,北京市101601

出　　处：《公路》2018年第6期19-23,共5页Highway

基　　金：中央高校基本科研业务费资助,项目编号3142015047;3142017070;河北省高等学校科学技术研究项目,项目编号ZD2017314

摘　　要：强度折减法和重力比例加载法是计算边坡安全系数的两种有限元方法。文中介绍了上述两种方法的基本原理,分析了两种方法的关系,并采用ABAQUS软件建立不同坡角的边坡模型,对两种方法的计算结果进行了对比。之后针对特定坡度的边坡,分析了两种方法对于材料参数的敏感性。结果表明,＂重力比例加载法相当于折减黏聚力值的强度折减法＂的观点是不成立的,两种方法之间并不存在此种关系。相比较而言,强度折减法的适用范围较广,对于材料参数的变化,计算结果的稳定性相对较好。Strength reduction method and gravity proportional loading method are two kinds of finite element methods for calculating slope safety factor.In this paper the basic principle of the above two methods is introduced,and the relationship between the two methods is analyzed.Then the slope models with different slope angles are established using ABAQUS software and the calculation results of the two methods are compared.After that,the sensitivity of the two methods to the material parameters is analyzed for the slope model with particular slope angle.The results show that the view ＂the gravity proportional loading method is equivalent to the strength reduction method of reduction of cohesion＂is untenable,and there is no such relationship between the two methods.In comparison,the strength reduction method has a wide range of application and the stability of the calculation results is relatively good for the change of material parameters.

关 键 词：强度折减法 重力比例加载法 敏感性分析 有限元 ABAQUS 

分 类 号：U416.1[交通运输工程—道路与铁道工程]