轨道参数对重载铁路钢轨焊缝区域轮轨动力作用的影响  

Influence of the Parameters of Track on the Wheel-Rail Dynamic Interaction due to the Rail Welding Joint of Heavy Haul Railways

作　　者：王慎[1] 王开云[1] 黄超[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《重庆理工大学学报（自然科学）》2013年第9期68-72,共5页Journal of Chongqing University of Technology：Natural Science

基　　金：科技部国家重点实验室自主研究课题项目(2013TPL_Z01;2012TPL_T05)

摘　　要：基于车辆-轨道耦合动力学理论和30t轴重货车-轨道垂向耦合动力学模型,计算了30t轴重货车通过钢轨焊缝不平顺区域时,轨道参数对轮轨作用的影响。结果表明:随着轨下支承刚度和轨下支承阻尼的增大,轮轨作用加剧;随着轨枕间距的增大,轮轨作用将有所减小;随着轨枕质量的增大,轮轨作用将略微增大,轨枕振动将明显降低。Based on the theory of vehicle-track coupled dynamics and the vertical coupled model be- tween 30t-axle-load freight car and track, the influence of the parameters of track on the wheel-rail in- teraction is analyzed, when the vehicle passes through the tangent track with rail welding joint. Re- suits indicate that the wheel-rail interaction will be enhanced with increase of the stiffness and damp- ing of rail pad. The wheel-rail interaction will be reduced gradually with increase of the interval of sleepers. Meanwhile, if the mass of sleeper increases, the wheel-rail interaction will be strengthened slightly, and vibration of sleeper will be decreased obviously.

关 键 词：大轴重 焊缝不平顺 轨道参数 轮轨作用 车辆-轨道耦合动力学 

分 类 号：U270.1[机械工程—车辆工程]