桥上列车横向摇摆力的随机分析  

Random Analysis of Lateral Swaying Force of Train Acting on Truss Bridge

作　　者：陈淮[1] 曾庆元[2] 

机构地区：[1]郑州大学土木工程学院,河南郑州450002 [2]中南大学土建学院,湖南长沙410075

出　　处：《桥梁建设》2002年第2期1-5,共5页Bridge Construction

基　　金：铁道部和河南省自然科学基金资助项目 ( 0 0 40 40 10 0

摘　　要：将列车 -桥梁视为一整体系统 ,由弹性系统动力学总势能不变值原理及形成矩阵的“对号入座”法则 ,建立列车 -桥梁系统横向振动方程 ,以机车车辆轮对的人工模拟蛇行波为激振源 ,计算了列车 -桥梁系统的横向振动 ,算出了货物列车以 80km /h车速通过 4座不同跨度桥梁时的车辆及桥梁横向振动响应全过程 (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 ,与按实测轮对蛇行波作为激振源输入的计算结果接近。分析这些计算结果 。The train and the bridge are coupled together as one system. The global lateral vibration equations of the system are set up, by using the principle of total potential energy with stationary value in elastic system dynamics and the 'set in right position' rule for from structural matrices. By using the test hunting curves of wheel set of the train as excitation, the responses of train and bridge system lateral vibration, lateral swaying force and tilting force between wheel and rail have been calculated when a cargo train travels through four steel truss bridges with different span respectively. The random calculated results are approach that of the actual measured hunting curves of wheel set of the train as excitation. Analyzed these responses, some regularity has been obtained.

关 键 词：桥梁 列车 横向摇摆力 随机分析 

分 类 号：U441.2[建筑科学—桥梁与隧道工程] U211.4[交通运输工程—道路与铁道工程]