列车通过抢修高墩横向振动随机分析  

Random Analysis of Lateral Vibration of Rush Repair High Pier while a Train Passing on It

作　　者：马坤全[1] 曹雪琴[1] 朱金龙[1] 

机构地区：[1]上海铁道大学

出　　处：《铁道学报》1998年第1期88-94,共7页Journal of the China Railway Society

基　　金：铁道部科研项目

摘　　要：将列车－梁－钢塔墩视为一整体振动系统，采用随机振动理论，首先用计算机模拟了货物列车通过天生桥钢塔架高墩（高４３ｍ）全过程，然后从理论上分析了该墩横向振动特性，结果与现场实测吻合较好。由此，讨论高达９０ｍ钢塔架墩横向振动振型及振幅。研究结果表明，抢修钢塔架高墩横向刚度较一般桥墩小，但货物列车限速通过时，仍能保持车轮不脱轨，其运行平稳性良好。The train, steel beam and steel tower pier are considered as a whole vibration system in this paper. According to the random vibration theory, the whole process while the freight cars run on the Tian Sheng bridge with steel tower high piers is simulated by the computer. The results are in satisfactory agreement with the field test data. On the basis of above, the lateral vibration responses of the bridge with rush repair high piers are calculated. The transverse dynamic characteristics of a 90 meters high steel tower pier are analysed in detail. The result of the research indicates that the lateral stiffness of the rush repair high pier is lower than the usual railway piers, but the trains can run on the bridge safely and smoothly at a limited speed.

关 键 词：钢塔架高墩 桥梁试验 横向振动 随机分析 列车 

分 类 号：U441.3[建筑科学—桥梁与隧道工程] U446.1[交通运输工程—道路与铁道工程]