车轮多边形磨耗对车桥耦合振动响应的影响  

Influence of Polygon Wear of Wheels on Vehicle-Bridge Coupling Vibration

作　　者：唐德发 吴梦雪 徐昕宇 张钞奕 李永乐[3] TANG Defa;WU Mengxue;XU Xinyu;ZHANG Chaoyi;LI Yongle(School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu 610500,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南石油大学土木工程与测绘学院,成都610500 [2]中铁二院工程集团有限责任公司,成都610031 [3]西南交通大学土木工程学院,成都610031

出　　处：《铁道标准设计》2024年第1期108-116,共9页Railway Standard Design

基　　金：国家自然科学基金项目(51708470);西南石油大学桥梁安全评估青年科技创新团队项目(2018CXTD07);国家杰出青年科学基金项目(51525804)。

摘　　要：为探究车轮多边形磨耗对车桥耦合系统振动响应的影响规律,采用ANSYS和SIMPACK联合仿真方法,以国内某高速列车和铁路简支梁桥为原型,建立车桥耦合振动分析模型,把轨道不平顺和车轮多边形磨耗作为系统的输入激励,对车桥耦合系统的振动特性展开研究。结果表明:车轮多边形磨耗对车桥耦合系统的振动响应影响显著;3阶车轮多边形磨耗使轮重减载率增大67.7%,严重降低了列车行驶的安全性,也使桥梁跨中横、竖向加速度分别增大2.74倍和2.27倍;车桥耦合振动响应随着车轮多边形磨耗幅值、阶数的增大而增大,当车轮多边形磨耗幅值由0.02 mm增大至0.08 mm时,列车轮重减载率、桥梁跨中横向和竖向加速度、钢轨中点横向和竖向加速度分别增加76.5%、174%和127%、47.3%和83.1%;当车轮多边形磨耗阶数由1阶增大至4阶时,列车轮重减载率、桥梁跨中竖向加速度、钢轨中点横向和竖向加速度分别增加116%、389%、82.0%和170%。特别地,列车以200 km/h速度运行时,3阶车轮多边形磨耗引发桥梁横向共振使得桥梁跨中横向加速度显著增大,是4阶车轮多边形磨耗作用时的2.74倍。In order to investigate the influence of polygon wear of wheels on the vibration response of vehicle-bridge coupling system,the vibration characteristics of the vehicle-bridge coupling system is evaluated via co-simulation of ANSYS and SIMPACK,in which a vehicle-bridge coupling vibration analysis model is established using a prototype high-speed train and a railway simply-supported beam bridge.The track irregularity and polygon wear of wheels are treated as the input excitations.The results show that the polygon wear of wheels has a significant effect on the vibration response of the vehicle-bridge coupling system.The third-order polygon wear of wheels increases the wheel load reduction rate by 67.7%,which reduces the safety of train operation greatly,and also increases the lateral and vertical acceleration response of the bridge midspan by 2.74 and 2.27 times,respectively.The vibration responses of vehicle-bridge coupling system increase with the increase of the amplitude and order of polygon wear of wheels.To be specific,when the amplitude of polygonal wear of wheels increases from 0.02 mm to 0.08 mm,the wheel load reduction rate,the lateral and vertical acceleration response at the bridge midspan,and the lateral and vertical acceleration response at the center of rail increase by 76.5%,174%and 127%,47.3%and 83.1%,respectively.When the order of polygon wear of wheels increases from the first order to the fourth order,the wheel load reduction rate,the vertical acceleration response at the bridge midspan,and the lateral and vertical acceleration response at the center of rail increase by 116%,389%,82.0%and 170%,respectively.In particular,when the train is running at 200 km/h,the lateral resonance of the bridge is caused by the third-order polygon wear of wheels,resulting in remarkable increase of the lateral acceleration response at the bridge midspan.The lateral acceleration response at the bridge midspan due to the third-order polygon wear are 2.74 times more than that due to the fourth-order polygon wear of wh

关 键 词：车桥耦合系统 联合仿真 车轮多边形磨耗 振动响应 共振 

分 类 号：U211.5[交通运输工程—道路与铁道工程] U270.33[机械工程—车辆工程]