摘要
地铁提速是未来城市轨道交通发展的一个重要趋势,而曲线线路则是地铁提速的瓶颈之一,长期服役过程中所产生的车轮磨耗问题,必然会给车辆曲线运行的稳定性带来挑战。为了掌握长期服役过程中提速地铁车辆的曲线运行性能,通过调研分析了某地铁车辆的车轮半径和车轮廓形磨损情况,建立了考虑车轮磨耗的地铁车辆曲线通过动力学模型,研究了车轮半径与廓形磨损对地铁车辆在曲线线路上的横向运动稳定性影响。在此基础上,针对提速地铁车辆面临的蛇行失稳问题,指出加装抗蛇行减振器的必要性。结果表明:针对长期在曲线线路上运行的车辆,车轮廓形的异常磨损产生了整体较大且带有波动性突变的等效锥度;较大的等效锥度有利于车辆通过曲线,但在波动性突变的耦合作用下,可能会导致车辆端部在通过圆曲线时出现蛇行失稳问题,因而较大锥度是影响稳定性的主要因素,锥度的波动性突变则是影响稳定性的次要因素;安装抗蛇行减振器能够有效地解决地铁车辆曲线运行横向失稳问题。论文工作对服役地铁车辆在曲线上进一步提速面临的横向稳定性问题具有一定的参考价值。
Speed-up metro is an important trend in future development of urban rail transit,and curved lines are one of bottlenecks for speed-up metro.The wheel wear problem arising during long-term service can inevitably bring challenges to the stability of vehicle curved operation.Here,to understand the curve running performance of speed-up metro vehicles during long-term service,wear of wheel radius and wheel profile of a certain subway vehicle was investigated and analyzed.A dynamic model of subway vehicle passing curve considering wheel wear was established,and effects of wheel radius and profile wear on lateral motion stability of subway vehicles on curved lines were studied.Then,aiming at the problem of snake instability faced by speed-up subway vehicles,the necessity of installing anti-snake vibration dampers was pointed out.The study showed that aiming at vehicles operating on curved routes for a long time,abnormal wear of wheel profile produces an overall larger equivalent taper with fluctuating mutation;larger equivalent taper is beneficial for vehicles to pass through curves,but under coupling action of fluctuating mutation,vehicle end may produce snake instability when passing through circular curves,larger taper is main factor to affect stability,while fluctuating mutation of taper is a secondary factor to affect stability;installing anti-snake vibration damper can effectively solve the lateral instability problem of subway vehicles during curved operation;the study results can have certain reference value for lateral stability problem faced by subway vehicles in service when further speeding up on curve lines.
作者
周慧
文永蓬
钟硕乔
李家豪
宗志祥
ZHOU Hui;WEN Yongpeng;ZHONG Shuoqiao;LI Jiahao;ZONG Zhixiang(School of Urban Rail Transit,Shanghai University of Engineering Science,Shanghai 201620,China;State Key Lab of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China;Shanghai Engineering Research Centre for Rail Transit Vibration and Noise Control Technology,Shanghai University of Engineering Science,Shanghai 201620,China;Vehicle Branch,Shanghai Metro Maintenance and Support Co.,Ltd.,Shanghai 200235,China)
出处
《振动与冲击》
北大核心
2025年第17期262-271,共10页
Journal of Vibration and Shock
基金
国家自然科学基金项目(52202477)
西南交通大学轨道交通运载系统全国重点实验室开放课题(TPL2103)
上海市轨道交通结构耐久与系统安全重点实验室开放基金(R202204)
上海市自然科学基金项目(15ZR1419200)。
