基于多因素正交试验的土坡参数敏感度分析  

Sensitivity analysis on parameters of soil slope based on multivariate orthogonal experiment

作　　者：史俊涛[1] 任琪[1] 黄春晖[1] 

机构地区：[1]贵州大学土木建筑工程学院,贵州贵阳550025

出　　处：《贵州师范大学学报（自然科学版）》2013年第4期85-88,共4页Journal of Guizhou Normal University：Natural Sciences

摘　　要：边坡的变形破坏通常是由多种因素复合作用形成的。为了研究各种因素对土坡稳定性的影响,研究以具体的工程实例为依托,采用有限元强度折减法计算土坡稳定安全系数并将正交试验设计运用到对影响土坡稳定性的多因素敏感性分析中。用极差和趋势分析法对各因素敏感度进行量化评价,找出影响土坡稳定性的主导因数和次要因素,对工程建设中边坡防治和加固方案的选择具有一定的指导意义。Slope deformation and failure is usually caused by combined action of multiple factors. In order to study the effect of various factors on soil slope stability, in this paper, the strength reduction FEM is used to calculate the safety factor based on the specific soil slope and the orthogonal design is applied to sensitivity analysis of factors influencing soil slope stability. By using the range analysis and trend analysis to do quantitative evaluation of sensitivity of various factors so as to find the dominant factors and secondary factors of influencing soil slope stability, which provide certain guiding signifi- cance for scheme selection of slope control and reinforcement in project construction.

关 键 词：正交设计 敏感性分析 安全系数 影响因素 土质边坡 

分 类 号：TU457[建筑科学—岩土工程]