铁道科学与工程学报2017，Vol.14Issue(6)：1174-1183,10.
滑面搜索策略对路堤下地基稳定可靠度的影响
Influence of slide search method on reliability of foundation stability under embankment
摘要
Abstract
Monte-Carlo method was used to calculate the reliability of foundation under embankment for its model uncertainty. The influences of critical slip methods on failure probability were analyzed. The influence regularities of variability and variance of strength parameters of embankment and foundation and foundation safety factor on reliability index were discussed. Study shows that the difference of reliability index between two critical slip methods is positively correlated with the variability of strength parameter, it decreases with increase of variance of strength parameter of embankment and foundation and keeps expanding with increase of foundation safety factor. The failure probabilities with respect to the two critical slip methods produce difference by order of magnitude if safety factorFs is larger than 1.5 and the safer method overall slope need to be used in analysis of reliability. If safety factor Fs is less than or equal to 1.5, simple and highly effective method Globe Minimum can be adopted either and the reliability index difference caused by Globe Minimum is not more than 0.26.关键词
地基稳定/可靠度分析/模型不确定性/Monte-Carlo法/安全系数Key words
stability of foundation/analysis of reliability/model uncertainty/Monte-Carlo method/safety factor分类
交通工程引用本文复制引用
李昂,张良,罗强,蒋良潍,张文生..滑面搜索策略对路堤下地基稳定可靠度的影响[J].铁道科学与工程学报,2017,14(6):1174-1183,10.基金项目
国家基础研究发展规划(973计划)项目(2013CB036204) （973计划）
