基于Monte-Carlo法的土坡抗震可靠度分析  

Reliability Study on Earth Slopes under Earthquake Based on Monte-Carlo Method

作　　者：陈菊香[1,2] 朱大勇[1] 卓建平[3] 许强[2] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [3]安徽省交通规划设计研究院,合肥230031

出　　处：《地下空间与工程学报》2009年第5期884-887,892,共5页Chinese Journal of Underground Space and Engineering

基　　金：国家自然基金资助项目(40772170);地质灾害防治与地质环境保护国家重点实验室“科技减灾,重建家园”专项科研资助项目

摘　　要：结合Morgenstern-Price条分法和Monte-Carlo数值模拟方法,采用拟静力的方法考虑水平和竖向地震加速度的作用,运用可靠度理论分析了地震效应和土性参数对土坡稳定性的影响,且将常规的可靠度分析结果和考虑土性参数空间变异性的可靠度分析结果进行了对比,计算结果表明:水平地震加速度、土性参数及其空间变异性对土坡稳定性具有显著的影响。Combining Morgenstern-Price method with Monte-Carlo numerical simulation method,using quasi-static approach to consider the horizontal earthquake acceleration and the vertical earthquake acceleration,the reliability theory is used to analyze earthquake effects and soil parameters on slope stability in this paper.Comparing the conventional reliability results with the reliability results with considering the spatial variability of soil parameters,a conclusion is drawn that the horizontal seismic acceleration,soil parameters and spatial variability have significant impact on the slope stability.

关 键 词：地震加速度 可靠度 土性参数 空间变异性 

分 类 号：TU435[建筑科学—岩土工程]