铁路碎石道床动刚度与阻尼的试验研究  

Study on dynamic stiffness and damp measurement of railway crushed stone ballast

作　　者：刘卫星[1] 王午生[1] 

机构地区：[1]同济大学铁道建筑工程系,上海200331

出　　处：《铁道学报》2002年第6期99-104,共6页Journal of the China Railway Society

基　　金：铁道部科技发展计划项目 (98GB31 - C) ;教育部<高等学校骨干教师资助项目>

摘　　要：道床动刚度和阻尼是轨道结构动力仿真计算的重要参数。本文介绍了采用落轴试验方法测试道床的动刚度和阻尼值 ,利用落轴模型法和参数辨识法分析计算道床的动刚度和阻尼 ,并用 L ab VIEW软件对测试数据进行采集计算 ,得到了不同道床材质、厚度、密实度以及脏污情况下的道床动刚度和阻尼值。通过试验认为利用落轴试验测试道床动刚度和阻尼值的方法是可行的 。Railway crushed stone ballast dynamic stiffness and damp are important parameters of dynamic simulation of track structure. Ballast dynamic stiffness and damp are tested by method of wheel axle drop, and calculated with model of wheel axle drop test and parameter analysis method. Software of LabVIEW is used to calculate and collect test data, and get the rational values of track stiffness with getting dynamic and damp under different depth, material, density and fouling of ballast are described in this paper. It is feasible that wheel axle drop test is used to test ballast dynamic stiffness and damp. The results are reliable.

关 键 词：碎石道床 动刚度 阻尼 试验研究 铁路轨道 轨道刚度 

分 类 号：U213.71[交通运输工程—道路与铁道工程] U213