铁道科学与工程学报2016，Vol.13Issue(7)：1234-1240,7.
基于Monte Carlo高速铁路飞砟可靠性分析研究
Reliability assess ment on high speed railway ballast flight based on monte carlo
摘要
Abstract
Ballast flight is a key problem influencing the application and development of ballasted high speed track,which is of random,discrete and complex nature.In the paper,based on ballast flight limit state function, the Monte Carlo simulation method was used to quantify the uncertain factors,including the dynamic ballast bed and aerodynamic effects.The quantitative probability of occurrence and risk assessment for ballast flight were in-vestigated.The results show that the occurrence probability increases with mean wind velocity,wind pressure co-efficients and the acceleration induced by track bed vibration,and decreases with the ballast mass and particle interlock force.The ballast flight reliability is sensitively influenced by aerodynamic effects,and the HSR ballast bed need aerodynamic optimization,such as ballast bed cross section and shoulder ballast design optimization to reduce the risk of ballast flight.关键词
高速铁路/飞砟/空气动力/动力作用/可靠度Key words
high speed railway/ballast flight/aerodynamic/dynamic/reliability分类
交通工程引用本文复制引用
井国庆,丁东,邵帅..基于Monte Carlo高速铁路飞砟可靠性分析研究[J].铁道科学与工程学报,2016,13(7):1234-1240,7.基金项目
国家自然科学基金资助项目 （）
