摘要
为了研究边坡稳定性影响因素的敏感性,先建立边坡有限元模型,选取重度、黏聚力、内摩擦角、坡度、泊松比、弹性模量6个影响因素进行正交试验,得到25组没有交互作用的试验组,并进行强度折减计算得出边坡稳定性系数,再利用极差与方差进行数据分析处理,得到各因素对边坡的敏感性与显著性,最后将计算结果与层次分析法得出的各因素综合权重进行对比,可以看出正交试验设计与层次分析法得到的结果一致。这表明在其他条件相同的情况下,边坡稳定性影响因素的敏感性从大到小依次为黏聚力、坡度、内摩擦角、重度、泊松比和弹性模量。
In order to study the factors influencing the sensitivity of the slope stability,a finite element model of the slope was established and six influencing factors including gravity,cohesion,internal friction angle,slope,Poisson′s ratio and elastic modulus are selected for orthogonal experimental design.25 groups of test groups without interaction are obtained and the strength reduction calculation is carried out to obtain,the slope stability factors.The data are analyzed and processed by range and variance to obtain the sensitivity and significance of each factor to the slope.By comparing the calculated results with the comprehensive weight of each factor obtained by the analytic hierarchy process,it can be seen that the results obtained by the orthogonal experimental design are consistent with those obtained by the analytic hierarchy process.The results show that the order of sensitivity of factors affecting slope stability is cohesion,slope,internal friction angle,gravity,Poisson′s ratio and elastic modulus when other conditions are the same.
作者
李金瑜
王喜华
LI Jinyu;WANG Xihua(School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610000,China)
出处
《河南工程学院学报（自然科学版）》
2022年第4期27-33,共7页
Journal of Henan University of Engineering：Natural Science Edition
基金
中铁二十三局科研项目(CR2301-GL-CMCB7B-2021-KY-01)。
关键词
有限元
层次分析法
敏感性分析
正交试验
finite element
analytic hierarchy process
sensitivity analysis
orthogonal experience
