钢轨波磨对高速车辆-道岔系统动力性能的影响
Influence of rail corrugation on dynamic performance of high-speed vehicle-turnout system
摘要
Abstract
In order to study the effect of rail corrugation on the dynamic performance of the high-speed vehicle-turnout system,a rigid-flexible coupling dynamic model of high-speed vehicle-turnout was established.Considering the flexible deformation of multiple rails in the turnout area,the surface corrugation of the rail was described by numerical simulation,and the influence factors such as distribution phase,wavelength,depth of wave and passing speed of rail corrugation were considered.The variation laws of wheel-rail vertical force and the vertical vibration of the vehicle components under the condition of corrugation in the turnout area were emphatically analyzed.The results show that when the rail corrugation is in the phase with the largest time-varying rate of the wave depth at the top width of the switch rail of 40 mm,the wheel-rail vertical force on the switch rail side is the largest.The rail corrugation of the turnout area will shorten the length of the wheel-load transition section.When the wavelength is 150 mm and the wave depth reaches 0.08 mm,the wheel on the side of switch rail is completely reduced in the wheel-load transition section,and the instantaneous wheel-rail separation phenomenon occurs.The maximum value of the wheel-rail vertical force and the vertical vibration acceleration of the vehicle axle box is negatively correlated with the wavelength,and positively correlated with the wave depth and speed.关键词
高速道岔/钢轨波磨/车辆-道岔刚柔耦合模型/轮轨动态相互作用/轮载过渡Key words
high-speed turnout/rail corrugation/vehicle-turnout coupled rigid and flexible model/wheel-rail dynamic interaction/wheel load transition分类
交通工程引用本文复制引用
李智恒,闫正,李抒效,徐井芒,王平..钢轨波磨对高速车辆-道岔系统动力性能的影响[J].中南大学学报（自然科学版）,2023,54(11):4596-4609,14.基金项目
国家自然基金科学基金资助项目(52122810,51978586,51778542) （52122810,51978586,51778542）
中国国家铁路集团有限公司科技研究开发计划项目(J2021G013,P2021T013) （J2021G013,P2021T013）
铁科院集团公司科研开发计划项目(2021YJ022) （2021YJ022）
四川省杰出青年科技人才项目(2020JDJQ0033)(Projects(52122810,51978586,51778542)supported by the National Natural Science Foundation of China （2020JDJQ0033）
Projects(J2021G013,P2021T013)supported by the Science and Technology Research and Development Program of China State Railway Group Co.Ltd. （J2021G013,P2021T013）
Project(2021YJ022)supported by the Science and Technology Research and Development Program of China Academy of Railway Sciences Group Co.Ltd. （2021YJ022）
Project(2020JDJQ0033)supported by the Distinguished Young Scientific and Technological Talents Project of Sichuan Province) （2020JDJQ0033）
