动车组侧向通过9号道岔动力特性仿真研究  

Simulation Research on Dynamic Characteristics of EMU Passing through No.9 Turnout

作　　者：李浩 赵国堂 孙加林 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]广州铁路(集团)公司,广东广州510088 [3]中国铁路总公司,北京100844 [4]中国铁道科学研究院铁道科学技术研究发展中心,北京100081

出　　处：《中国铁道科学》2017年第6期30-36,共7页China Railway Science

基　　金：中国铁路总公司科技研究开发计划项目(Z2015-G002)

摘　　要：采用铁路轮轨动力学仿真计算软件建立车辆—道岔耦合动力学模型,仿真分析CRH5型动车组侧向通过50kg·m-1钢轨9号道岔的行车安全性和磨耗情况,研究并提出改善高速动车组侧向通过小号码道岔安全性、轮轨磨耗的技术措施。结果表明:在不考虑现场随机不平顺的情况下,CRH5型动车组侧向通过9号道岔时脱轨系数、轮轴横向力的峰值分别达到0.52和28kN,均维持在较高的水平,而且轮轨侧面磨耗功也较大,整体上已经超过了轮轨垂直磨耗功,说明动车组通过岔区时侧磨是轮轨磨耗的主因,建议加强道岔区的养护维修工作,及时消除轨道几何超限现象;另外,通过增大车辆一系悬挂横向刚度或采用60kg·m-1钢轨9号道岔,可以有效地减少轮轨的垂直磨耗和侧面磨耗,起到减缓轮轨磨耗的效果,且后者还可以大幅度提升动车组侧向过岔的安全性。The coupling dynamics model of vehicle and turnout was established by using railway wheel-rail dynamics simulation software.Simulation analyses were carried out on the running safety and wear conditions of CRH5 EMU passing through No.9 turnout of 50 kg·m^-1 rail.Technical measures to improve the safety and wheel-rail wear of high speed EMU passing through small number turnout were researched and put forward.Results showed that the peak values of derailment coefficient and axle transverse force reached 0.52 and 28 kN respectively when CRH5 EMU passing through No.9 turnout without considering the random irregularity of the test field,and these peak values maintained at a higher level.The side wear power was also larger,it exceeded the vertical wear power of wheel and rail as a whole,indicating that the side wear was the main cause for the wheel and rail wear when EMU passing through turnout.It was recommended to strengthen turnout maintenance and repair work,and to eliminate timely the track geometry out of gauge.In addition,increasing the lateral stiffness of vehicle primary suspension or adopting No.9 turnout of 60 kg·m^-1 rail can effectively reduce the vertical wear and side wear of wheel and rail,and mitigate wheel and rail wear.The latter can greatly improve the safety of EMU passing through turnout.

关 键 词：动车组 侧向通过 小号码道岔 动力特性 轮轨磨耗 仿真分析 

分 类 号：U211.5[交通运输工程—道路与铁道工程] U213.6