土质边坡最不利圆弧滑面及稳定系数解析解法  

A Theoretical Solution of the Most Disadvantageous Circular Sliding Surface and Its Stability Coefficient for Soil Slide Slope

作　　者：蒋楚生[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道工程学报》2008年第6期24-27,共4页Journal of Railway Engineering Society

摘　　要：研究目的:采用瑞典圆弧条分法理论分析的方法求解圆弧型滑动面的稳定系数Fs和圆弧参数x0、y0、r的精确表达式。具有传统方法不可比拟的优点。研究结论:本文采用引入2个控制圆弧位置的参数,从稳定系数定义出发通过积分和化简,获得了稳定系数Fs等的精确表达式。其计算方法简单、收敛迅速,与其他学者的计算结果十分接近,对于一个给定设计参数的边坡,即使采用试算也能在几分钟之内获得精度较高的解答,结果可靠值得信赖。该计算公式具有较大的理论与现实意义,值得推广应用。Research purposes ： The accurate formula of the stability coefficient Fs and the circular parameters x0 、Y0、 r of a circular land - sliding surface have been obtained from the sweden circular slice method. There is an incomparable advantage compared to the traditional method. Research conclusions：The formula of coefficient of stability Fs is recovered by introducing two parameters l and s of controlling arc position and simplifying the integral sum. This computing method is simple and easy with the result closing to the results made from other methods. With this method, a reliable resolution of one side slope given parameters can be obtained in a few seconds, so this method has real significance and is worth adopting widely.

关 键 词：潜在圆弧滑动面 瑞典圆弧条分法 稳定系数 积分 精确表达式 

分 类 号：U213.13[交通运输工程—道路与铁道工程]