西南交通大学学报（社会科学版）Issue(4)：662-667,6.DOI:10.3969/j.issn.0258-2724.2014.04.016
考虑土体参数空间变异性的边坡极限平衡法求解
Limit Equilibrium Method of Slope Stability Analysis Considering Spatial Variability of Soil Properties
摘要
Abstract
In order to evaluate the adaptability of the limit equilibrium method (LEM )to assess the stability of spatially variable soil slope,stability analysis of slope sections was conducted using the LEM (limit equilibrium method)considering the spatial variability of soil property. The Karhunen-Loève (K-L)method was adopted to generate the spatial samples of soil slope,i. e. ,random fields. The Fellenius method,the simplified Bishop method,the Morgenstern-Price method and the Spencer method were utilized to calculate the safety factors of the slope sections. In addition,the failure probability of a given slope was analyzed. The calculated results show that the safety factors calculated with the later three methods are very close to each other. And basically,they are much better than the Fellenius method. For simplicity,the Bishop method can take the place of the Morgenstern-Price method under the condition that the critical slip surface is circular. The combined use of safety factor and failure probability can evaluate slope safety more quantitatively.关键词
边坡稳定/概率/空间变异/极限平衡法Key words
slope stability/probability/spatial variability/limit equilibrium method分类
交通工程引用本文复制引用
白桃,黄晓明..考虑土体参数空间变异性的边坡极限平衡法求解[J].西南交通大学学报（社会科学版）,2014,(4):662-667,6.基金项目
致谢西南交通大学道路工程四川省重点实验室开放基金资助项目（LHTE008201108）． （）
