基于风场模拟的高铁接触网动态性能分析  

Analysis on Dynamic Characteristics of High-speed Railway Catenary Based on Wind Field Simulation

作　　者：刘志刚[1] 侯运昌[1] 韩志伟[1] 汪宏睿 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道学报》2013年第11期21-28,共8页Journal of the China Railway Society

基　　金：国家自然科学基金(U1134205;51007074);铁道部科技研究开发计划(2011J016-B);中央高校基本科研业务费专项资金资助项目(SWJTU11CX141)

摘　　要：风场是影响高铁接触网动态性能的重要因素之一。本文分别使用谐波合成法、自回归模型法、小波重构法和随机傅里叶谱法进行了脉动风速时程的模拟,并进行对比。通过建立高速铁路弓网模型,将生成的风速时程数据加入模型,仿真风场影响接触网受流的主要参数,分析接触网的水平和垂直位移、弓网接触压力等动态性能的影响。其结论为:接触线在水平风力作用下主要在跨中点一侧做水平摆动和垂直振动,跨中点处的摆动幅值明显较大;当列车速度给定时,弓网接触压力随风速的增大而绕一固定的接触压力均值波动,偏移均值的程度变大。The wind field is one of the important factors that influence the dynamic characteristics of high-speed railway catenary systems. In this paper, the harmonic synthesis, auto regressive, wavelet restructuring and random Fourier spectrum methods were adopted to simulate the fluctuating wind speed time series, and the simulation results were compared one another. After the pantograph-catenary model was built, the data of wind speed time series were added into the model. The main parameters of wind field influencing the dynamic characteristics of high-speed railway catenary systems, such as horizontal and vertical displacements, and con- tact pressures, were simulated. Conclusions are drawn as follows： Contact wires under the action of horizontal wind mainly swing horizontally and vibrate vertically on one side of the midpoint, and reach their obviously seen large amplitudes at the midpoint; given the train speed, the contact pressure fluctuate randomly around a fixed mean value along increasing of wind speeds and the shift level to the mean value becomes large.

关 键 词：高速铁路 接触网 风场模拟 动态性能 

分 类 号：U225.7[交通运输工程—道路与铁道工程]