高速铁路特大桥上无缝线路纵向附加力计算  

Calculation of Additional Longitudinal Forces in Continuously Welded Rails on Supper-Large Bridges of High-Speed Railways

作　　者：蔡成标[1] 

机构地区：[1]西南交通大学列车与线路研究所,四川成都610031

出　　处：《西南交通大学学报》2003年第5期609-614,共6页Journal of Southwest Jiaotong University

摘　　要：将轨道结构、桥梁及墩台基础作为一个整体系统,建立了桥上无缝线路纵向附加力计算的有限元模型,以京沪高速铁路中两座特大桥为例,研究了桥上无缝线路钢轨温度附加力、挠曲附加力的分布及其对桥梁墩台的传递规律,同时还分析了断轨力和制动附加力的影响.计算结果符合桥上无缝线路的基本原理.编制的计算软件(BCWR),可用于高速铁路特大桥上无缝线路的设计.With the track, bridge and its piers taken as an integrated system, the finite element model to analyze the additional longitudinal forces in continuously welded rails (CWR) on bridges was established. The distribution of additional longitudinal forces due to temperature and bridge flexure and the influences of braking forces and the forces due to rail breaking were studied. The results by simulation conform with the principle of CWR on bridges. A simulation program named BCWR is presented, which can be applied to the design of CWR on supper-large bridges of high-speed railways.

关 键 词：高速铁路 无缝线路轨道 纵向附加力 

分 类 号：U238[交通运输工程—道路与铁道工程]