一种非条分法的均质土坡及均质地基土坡稳定安全系数新算法  

A New Non-slice Method for Calculating Stability Safety Factor of Homogeneous Slopes

作　　者：赵四汉 单君 胡永富 毛斌 ZHAO Sihan;SHAN Jun;HU Yongfu;MAO Bin(Zhejiang Provincial Institute of Communications Planning,Design&Research,Hangzhou 310000,China)

机构地区：[1]浙江省交通规划设计研究院有限公司,杭州310000

出　　处：《三峡大学学报（自然科学版）》2020年第5期28-34,共7页Journal of China Three Gorges University：Natural Sciences

基　　金：国家重点研发计划课题(2016YFC0802203-11)。

摘　　要：针对均质土坡及均质地基土坡,提出了一种非条分法的稳定安全系数新算法.基于极限平衡原理,通过引入描述圆弧滑动面函数的三个自变量,以滑动体整体为研究对象并以其为积分域,建立积分形式的极限平衡方程,推导了稳定安全系数的计算公式,编制了计算程序并通过均质土坡和均质地基土坡两个算例将该方法与条分法的结果进行了对比,结果表明与严格条分的Spencer法、Morgenstern-Price法的偏差为0.68%.最后和条分法进行了对比探讨.A new algorithm of stability safety factor based on non-slice method is proposed for homogeneous soil slope and homogeneous soil foundation.Based on the principle of limit equilibrium,by introducing three independent variables describing the function of circular sliding surface,taking the whole sliding body as the research object and taking it as the integral domain,the limit equilibrium equation in integral form is established.The calculation formula of stability safety factor is deduced and a calculation program is compiled.By the comparison with those of slice method in two examples of homogeneous soil slope and homogeneous soil foundation,the results show that the deviation among the new method and the Spencer method and the Morgenstern-Price method is within 0.68%.Finally,discussions are given compared with the slice method.

关 键 词：极限平衡原理 均质土坡 安全系数 条分法 

分 类 号：TU43[建筑科学—岩土工程]