基于子集模拟的铁路路基重力式挡土墙系统可靠度分析  

System Reliability Analysis of Gravity Retaining Wall of Railway Embankment Based on Subset Simulation

作　　者：李斌[1] 胡学超 LI Bin;HU Xuechao(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第5期953-958,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：文中以某典型的铁路路堤挡土墙为例,介绍了铁路路基重力式挡土墙的确定性分析模型和结果.基于子集模拟方法的不确定性分析流程,分析了随机参数与系统安全系数的相关性.通过直接蒙特卡洛模拟与理论计算方法,对比验证了子集模拟方法的结果.结果表明:子集模拟方法在大幅降低计算消耗的同时,保证了计算精度.Taking a typical railway embankment retaining wall as an example,the deterministic analysis model and results of railway subgrade gravity retaining wall were analyzed.Based on the uncertainty analysis process of subset simulation method,the correlation between random parameters and system safety factor was analyzed.Through direct Monte Carlo simulation and theoretical calculation,the results of subset simulation method were compared and verified.The results show that the subset simulation method can greatly reduce the calculation consumption and ensure the calculation accuracy.

关 键 词：重力式挡土墙 可靠度分析 子集模拟 

分 类 号：TU476.4[建筑科学—结构工程]