径向条分极限分析法在土坡稳定性分析中的应用  

Slope Stability Analysis Based on Limit Analysis Theory with Radial Slice Method

作　　者：刘秀军[1] 贺建清[1] 

机构地区：[1]湖南科技大学湖南省普通高等学校土木工程施工过程与质量安全控制重点实验室,湖南湘潭411201

出　　处：《矿冶工程》2011年第2期12-15,19,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金资助项目(50874043);湖南省科技计划项目(2009SK3037)

摘　　要：鉴于传统极限分析法中建立协调速度场的复杂性,构建了圆弧滑动土坡径向条分破坏模式,解决了协调速度场难以建立的问题。基于塑性力学极限分析原理,采用强度储备安全系数定义法,推导出了均质土坡稳定性径向条分极限分析法。算例验证结果表明,该法具有使用简便、可靠性强等优点,对于评价均质土坡的稳定性具有重要的指导意义。Due to the complexity in obtaining a harmonious velocity field with traditional limit analysis method,a failure mode of radial slice method was established for circular sliding slope.Based on the theory of plastic limit analysis,the limit analysis formula for homogeneous soil slope stability with radial slice method was derived based on the safety factor of the strength reserve.An example of verification showed that this method,with enhanced convenience and reliability,is of significant importance for evaluating the stability of homogeneous slopes.

关 键 词：边坡 土坡稳定 圆弧滑动 径向条分 协调速度场 极限分析 

分 类 号：TU441.35[建筑科学—岩土工程]