摘要
本文将列车-桥梁视为一整体系统,由势能驻值原理及形成矩阵的“对号入座”法则,建立系统横向振动方程,以机车车辆轮对及构架的实测蛇行时程曲线为激振源,算出了货物列车以5种车速通过4座不同跨度钢桁梁桥时的车辆及桥梁振动响应过程(从机车进桥至车尾离桥)波形图、列车横向摇摆力和侧倾力的波形图。分析这些波形图,可以得出一些具有一定规律的现象。
In this paper,he train and the bridge are coupled together as one system.The global lateral vibration equations of the system are set up by using the potential energy variation principle and the“Set-in-Right-Position”Rule for forming structural matrices By using the test hunting curves of bogies and wheels of the tr- ain as excitation,the responses of train-bridge system lateral vibration,lateral rocking and lurch forces between wheel and rail have been calculated when a cargo train travels through four steel truss bridges with different span respectively at five differ- ent speeds.Analysing these time-history curves of responses,some regularity has been gained.
出处
《长沙铁道学院学报》
CSCD
1991年第3期42-51,共10页
Journal of Changsha Railway University
关键词
桁梁桥
列车
桥
横向摇力
铁路桥
deck steel truss bridge
train and bridge system
lateral vibration
lateral rocking force
