普速铁路有砟轨道扣件组装疲劳试验荷载参数研究  

Research on load parameters in fatigue test for fastening assemblies of ballast track on conventional railway

作　　者：闫子权[1] 张欢[1] 李子睿[1] 李彦山[1] 

机构地区：[1]中国铁道科学研究院铁道建筑研究所,北京100081

出　　处：《铁道建筑》2016年第1期72-75,共4页Railway Engineering

基　　金：中国铁路总公司科技研究开发计划项目(2014G002-B)

摘　　要：通过对目前机车车辆结构、扣件刚度及线路运营条件下的轮轨力进行理论计算和现场测试数据统计分析,确定了普速有砟轨道线路在轴重25 t、曲线半径300 m条件下的轮轨力,并对扣件单节点所承受的垂向力、横向力及倾翻力矩进行了理论分析。根据分析结果,建议将《扣件组装疲劳试验方法》(TB/T2491—94)标准中的疲劳荷载参数修订为垂向疲劳荷载75 k N,横向疲劳荷载60 k N,试验轨高120 mm。Based on theoretical calculation and field test data statistical analysis of the current vehicle structure fastener stiffness and wheel rail force under line operation condition,the wheel rail force in condition of 25 t axle load and 300 m curve radius on common ballast track was determined,and the vertical force,lateral force and tilting moment bore by fastener single node was analyzed.The analysis results showed that fatigue load parameters in Standard for Test Methods of Fastening Assemblies Fatigue（TB/T2491—94） should be revised as follows：75 kN for vertical fatigue load,60 kN for lateral fatigue load,and 120 mm for test rail height.

关 键 词：扣件组装疲劳 垂向疲劳参数 横向疲劳参数 疲劳试验轨高 

分 类 号：U213.2[交通运输工程—道路与铁道工程]