有限元强度折减系数法在土质边坡的应用  

Application of finite element strength reduction factor method in soil slope

作　　者：杨晓林 王睿[2] YANG Xiaoling;WANG Rui(Gansu Province Administration of Bureau of Highway, Lanzhou 730030, China;;Nationalities School of Civil Engineering, Northwest Minzu University, Lanzhou 730030, China)

机构地区：[1]甘肃省公路管理局,兰州730030 [2]西北民族大学土木工程学院,兰州730030

出　　处：《中国科技论文》2018年第13期1452-1456,共5页China Sciencepaper

基　　金：中央高校基本科研业务费专项资金资助项目(31920140081)

摘　　要：针对实际公路工程中边坡设计安全问题,提出采用有限元强度折减系数法,研究高速公路高边坡在不同的折减强度下的安全性,并采用瑞典条分法验证其结构的可靠性。结果表明,有限元强度折减系数法与计算机可视化技术结合可以更加直观地反映边坡的滑动面及稳定系数;采用传统分析方法与有限元强度折减系数法所得的滑动面相似,但有限元强度折减系数法更为精准;采用有限元强度折减系数法计算得到的稳定系数高于传统计算结果的3.35%,说明强度折减系数法在土质边坡稳定性分析中具有较高的可靠性及精确性。The strength factor reduction method was used to study the safety problem of slope design in actual highway engineering.The safety of highway high slope under different reduction strengths was evaluated andthe reliability of the structure was verified by using the Sweden slice method.The results showed that the combination of finite element strength reduction factor method and computer visualization technology can intuitively reflect the slope sliding surface and the stability coefficient.The traditional method and the finite element strength reduction coefficient method have similar sliding surfaces but the latter was more accurate.The stability factor calculated by the finite element strength reduction factor method was3.35%higher than of the traditional calculation results,which verifies the effectiveness of the measures proposed in this study.It shows that the strength reduction coefficient method has a higher degree of reliability in soil slope stability analysis.

关 键 词：道路工程 边坡设计 有限元强度折减系数法 稳定系数 

分 类 号：U416[交通运输工程—道路与铁道工程]