边坡平面破坏稳定分析的最小势能方法  

Plane Wreck Slope Stability Analysis using Principle of Minimum Potential Energy

作　　者：陆洋[1] 李铀[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075

出　　处：《工程建设与设计》2006年第10期55-58,共4页Construction & Design for Engineering

基　　金：湖南省科技计划重点项目(05FJ2006)

摘　　要：提出了一种分析边坡稳定性的新方法,依据平衡体系势能变化最小的原理,从整个边坡的势能变化求得一个满足势能的最小位移,并直接求出滑面上的法向应力分布,均质边坡可直接得到安全系数。并且建立了二维边坡平面破坏稳定分析模型。结果表明,此方法的结果准确,与传统极限平衡法的误差在2%～3%以内。Nowadays the limited equilibrium method is yet the basic principle in slope stability analysis. A new method is put forward to analyze the stability of slopes. Based on the principle that the equilibrium System＇s potential energy should be the minimum, a little displacement can be got and the normal stress distribution along the sliding surface can be achieved .For uniform slope, the safety factor can be got directly with the consideration of equilibrium conditions and the principle of strength failure. The result of test problem demonstrates the validity of this method.

关 键 词：边坡稳定 最小势能方法 平面破坏 安全系数 

分 类 号：TU441.35[建筑科学—岩土工程]