机械科学与技术2011，Vol.30Issue(10)：1664-1668,5.
接触线风振疲劳可靠性分析
Fatigue Reliability Analysis of Contact Wire under Wind Load
摘要
Abstract
To get the fatigue stress spectrum through the contact wire stress time history, a statistical analysis of the average wind speed probability distribution of Hundred-Miles Wind Area at Lanchow-Sinkiang railway is made, and a multivariable simulation model of stochastic wind field based on the spectral representation method is proposed, and a finite element model of a segment eatenary of the strong wind area in Xinjiang is built up by the finite element program ANSYS, which consists of hanging structures and support structures. To research the fatigue reliability of contact wire under wind load, a fatigue reliability calculation method is proposed, which base on the maximum average wind speed distribution function, fatigue stress spectrum and Palmgren-Miner linear cumulative fatigue damage criterion. The results show that the average wind speed probability distribution of Hundred-Miles Area at Lanchow-Sinkiang railway obey Weibull distribution which shape parameter is 2.5 and scale parameter is 16.2 ; the fatigue reliability of contact wire under wind load can be improved in evidence by decreasing catenary span.关键词
接触线/疲劳可靠性/风振响应/强风地区Key words
catenary systems/strong wind area/wind-induced vibration response/dynamic stability/parameters analysis分类
交通工程引用本文复制引用
曹树森,邓斌,马素君,刘晓红..接触线风振疲劳可靠性分析[J].机械科学与技术,2011,30(10):1664-1668,5.基金项目
铁道部重点项目（2008J019）资助 （）
