地铁道岔侧向速度提升和低磨耗结构设计研究  

Research on Structure Design of Increasing Passing Speed and Low Wear in the Diverging Route of Metro Turnouts

作　　者：张志良 史海欧 袁泉 罗信伟 徐井芒[3] ZHANG Zhiliang;SHI Haiou;YUAN Quan;LUO Xinwei;XU Jingmang(Guangzhou Metro Group Co.Ltd.,Guangzhou 510308,China;Guangzhou Metro Design&Research Institute Co.,Ltd,Guangzhou 510010,China;MOE Key Laboratory of High Speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]广州地铁集团有限公司,广州510308 [2]广州地铁设计研究院股份有限公司,广州510010 [3]西南交通大学高速铁路线路工程教育部重点实验室,成都610031

出　　处：《铁道建筑》2021年第6期129-134,共6页Railway Engineering

基　　金：国家重点研发计划(2017YFB1201102)。

摘　　要：为提高地铁9号道岔侧向通过速度并降低钢轨磨耗,结合基于质点运动的基本参数法提出了6种线型设计方案,结合多体动力学仿真软件SIMPACK,研究线型优化对车辆以45 km/h速度侧逆向过岔时轮轨动态相互作用和钢轨磨耗的影响。结果表明:适当增加线型相离值能够延后曲尖轨最大磨耗点发生位置,增强道岔钢轨耐磨性,而过大的相离值会造成动能损失超限;采取直曲组合、刨切直基本轨加宽曲尖轨的方法优化线型,能够降低动能损失值,并实现低磨耗设计;对比车轮踏面磨耗前后动力学仿真结果,道岔线型6能在实现侧向允许通过速度提升的同时,保持良好的行车品质和钢轨耐磨性。In order to increase the passing speed and decrease the rail wear in the diverging route of 1∶9 metro turnouts,six kinds of layout design schemes were proposed based on the basic parameter method of particle motion.Combined with the multi-body dynamics simulation software SIMPACK,the influence of layout optimization on the wheel rail dynamic interaction and rail wear was studied when the vehicle passes the turnout at the speed of 45 km/h in the facing move of diverging route.The results show that appropriately increasing the layout separation value can shift the maximum wear position of the curved switch rail backwards and enhance the wear resistance of the turnout rail,while excessive separation value will cause the kinetic energy loss overrun.In order to reduce the kinetic energy loss and realize the low wear design,the method of straight curved combination,planing straight stock rail and widening curved switch rail was adopted to optimize the layout.Compared with the dynamic simulation results before and after the wheel tread wear,the 6th turnout layout scheme can improve the passing speed in the diverging route and maintain good driving quality and rail wear resistance at the meantime.

关 键 词：地铁 道岔 数值模拟 线型优化 侧向速度 低磨耗 动力特征 

分 类 号：U213.4[交通运输工程—道路与铁道工程]