不同轨道型式的地铁车辆-轨道耦合振动特性研究  

Research on Metro Vehicle-Track Coupling Vibration Characteristics of Different Track Types

作　　者：贾小平 胡定祥 李大地[2] 李家栋 杨陈 朱程 JIA Xiaoping;HU Dingxiang;LI Dadi;LI Jiadong;YANG Chen;ZHU Cheng(CRRC Nanjing Puzhen Co.,Ltd.,210031,Nanjing,China;不详)

机构地区：[1]中车南京浦镇车辆有限公司,南京210031 [2]西南交通大学牵引动力国家重点实验室,成都610031 [3]南京地铁运营有限责任公司车辆分公司,南京210012

出　　处：《城市轨道交通研究》2022年第7期56-59,共4页Urban Mass Transit

摘　　要：对某地铁线路的轨道型式类型及占比进行统计,对不同轨道型式下的车辆-轨道振动进行测试,分析了轮轨系统的动态响应,深入研究了普通道床+ZX-2扣件、普通道床+剪切扣件、普通道床+压缩扣件等典型轨道型式下轮轨耦合振动特性,以及车轮多边形轮周对轮轨振动特性的影响。结果表明,不同扣件刚度对轮轨振动特性的影响明显。其中:采用普通道床+ZX-2扣件时,轮轨间发生中低频轮轨力共振,振动主频为58 Hz,振动能量增大;采用普通道床+剪切扣件、普通道床+压缩扣件时,轮轨未发生共振,振动能量分配均衡;多边形车轮转频倍频与轮轨系统的固有频率发生了共振,振动能量显著增大。Track types and proportion of certain metro line are counted,and vehicle-track vibration tests of different track types are carried out.Dynamic response of wheel-rail system is analyzed.Wheel-rail coupling vibration characteristics of typical track types including common track bed+ZX-2 fastener,common track bed+shear fastener,common track bed+compression fastener are studied in-depth,as well as influence of polygonal wheel on wheel-rail vibration characteristics.Results show that different fastener stiffness has evident influence on wheel-rail vibration characteristics.Among them,P2 force resonance occurs between wheel and rail when the common track bed+ZX-2 fastener is adopted,and the main frequency of vibration is 58 Hz,with vibration energy amplifying.When the common track bed+shear fastener or+compression fastener is adopted,wheel-rail resonance does not occur,and the vibration energy distribution is balanced.Polygonal wheel frequency doubling frequency resonates with the wheel-rail system natural frequency,and the vibration energy increases significantly.

关 键 词：地铁车辆 轨道型式 振动特性 中低频轮轨力共振 车轮轮周多边形 钢轨波磨 

分 类 号：U211.5[交通运输工程—道路与铁道工程]