土木与环境工程学报（中英文）2024，Vol.46Issue(4)：60-74,15.DOI:10.11835/j.issn.2096-6717.2023.037
考虑各向异性空间变异性的边坡可靠度分析
Analysis on slope reliability considering anisotropic spatial variability of soil parameters
摘要
Abstract
In current slope reliability analysis,the failure probability might be wrongly calculated because of the inadequate consideration of anisotropic spatial variability of soil parameters.Therefore,a random finite difference method(RFDM)framework considering anisotropic spatial variability is established.Taking the general anisotropic spatial variability slope as a reference slope,the influence of anisotropic spatial variability on slope reliability is systematically studied from the aspects of fluctuation range direction structure,cross-correlation coefficient,variation coefficient and fluctuation range.The results show that the coordinate-transformation-based anisotropic random field simulation method can effectively characterize anisotropic spatial variability of soil parameters.Strain-clustering-based slope critical slip surface searching algorithm can accurately determine the complex critical sliding surface of slope.Compared with the general anisotropic spatial variability,the slope failure probability is overestimated and greatly underestimated when considering rotational anisotropy and transverse anisotropy,respectively.In addition,considering isotropic random fields can overestimate and underestimate the slope failure probability in case of greater and smaller scale of fluctuation,respectively.关键词
随机有限差分/边坡可靠度/蒙特卡洛模拟/各向异性空间变异性/临界滑面Key words
random finite difference method/slope reliability/Monte Carlo simulation/anisotropic spatial variability/critical slip surface分类
天文与地球科学引用本文复制引用
明思成,仉文岗,何昱苇,陈龙龙,覃长兵..考虑各向异性空间变异性的边坡可靠度分析[J].土木与环境工程学报（中英文）,2024,46(4):60-74,15.基金项目
重庆市自然科学基金(cstc2020jcyj-jq0087) （cstc2020jcyj-jq0087）
在渝高校与中国科学院所属院所合作项目(HZ2021001) Natural Science Foundation of Chongqing(No.cstc2020jcyj-jq0087) （HZ2021001）
Cooperation Projects Between Universities in Chongqing and Institutes of Chinese Academy of Sciences(HZ2021001) （HZ2021001）
