摘要
为明确固定辙叉轮缘槽宽度对辙叉区轮轨关系的影响,基于轮轨接触理论和车辆—道岔耦合振动理论,提出以轮载过渡断面等轮轨接触几何参数为主要评价指标的轮缘槽宽度优化方法,分析轮缘槽宽度对固定辙叉区轮轨接触几何关系和轮轨动力相互作用的影响。研究结果表明:在轮载过渡区,合理减小轮缘槽宽度可增大实际轮载过渡断面心轨轨头宽度且降低等效锥度发生突变几率;辙叉轮缘槽宽度变化对轮轨动力相互作用影响不大,各动力学指标幅值变化极小,进一步验证了以轮轨接触几何参数为主要评价指标的轮缘槽优化方法的可靠性。
Based on wheel/rail contact theory and vehicle/turnout dynamic coupling theory,an optimization method was proposed to specify the influences of the flangeway width on the wheel/rail geometry contact relationship in the fixed nose crossing.This method employed wheel/rail geometry contact parameters as primary evaluation indexes to optimize the flangeway width.The influences of the flangeway width between the wing rail and the nose rail on the wheel-rail contact relationship and the wheel-rail dynamic interaction were analyzed based this method.The result shows that the flangeway width should be minimized to a reasonable magnitude in the wheel-load transition zone to decrease the probability of the sudden change of the equivalent conicity and thicken the practical wheel-load transition cross section and finally undermine the wheel-rail wear.The flangeway width has little influence on the wheel/rail dynamic interaction as the amplitude of all dynamic indicators in all schemes rarely change,which further validates the reliability of the optimization method which presents the wheel/rail geometry contact parameters as main evaluation indicators.
作者
赵卫华
曹洋
王启云
康晶晶
马彬斌
ZHAO Weihua;CAO Yang;WANG Qiyun;KANG Jingjing;MA Binbin(Key Laboratory of Underground Engineering of Fujian Province,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2020年第12期3190-3198,共9页
Journal of Railway Science and Engineering
基金
国家自然科学基金资助项目(51508098,51508097)
福建省自然科学基金资助项目(2020J01888)。
关键词
固定辙叉
道岔
轮缘槽
轮轨接触关系
轮轨动力相互作用
fixed nose crossing
turnout
the flangeway width
wheel/rail contact relationship
wheel/rail dynamic interaction
作者简介
通信作者:赵卫华(1984−),女,山西朔州人,副教授,博士,从事铁路轨道结构优化及轨道动力学研究,E−mail:whzhao.good@163.com。
