摘要
本文对沈丹客运专线隧道、曲线、长大坡道等地段的不同程度车轮磨耗下CRH5G型动车组的车体振动加速度进行了测试,研究不同线路条件、车轮踏面磨耗和钢轨廓形打磨等因素对CRH5型动车组车体振动加速度的影响,得到了不同线路条件下车体振动特征及变化规律。研究结果表明:(1)抖车主要发生在隧道线路条件下,加速度振幅是其他线路条件的2倍以上;(2)随车轮镟修后运营里程的增加,车体振动加速度有增大趋势;(3)钢轨廓形打磨可以有效优化轮轨匹配关系,以减小车体振动加速度;(4)建议沈丹客运专线钢轨打磨周期为2~3 a,隧道内打磨周期可适当缩短。
In this paper,the vibration acceleration of CRH5G EMU under different wheel wear in tunnels,curves and long ramps of Shenyang-Dandong Passenger Dedicated Line is tested,the influence of different line conditions,wheel tread wear and rail profile grinding on the vibration acceleration of CRH5 EMU is studied,and the characteristics and variation laws of car body vibration under different line conditions are obtained.The results show that:(1)The car shake mainly occurs under the tunnel line condition where the acceleration amplitude is more than twice that of other line conditions.(2)With the increase of operating mileage after wheel reprofiling,the vibration acceleration of car body tends to increase.(3)Rail profile grinding can effectively optimize the wheel-rail matching relationship to reduce the vibration acceleration of the car body.(4)It is suggested that the rail grinding cycle of Shenyang-Dandong Passenger Dedicated Line should be 2~3 years,and the grinding cycle in the tunnel can be shortened appropriately.
作者
孟繁国
张紫龙
马德东
MENG Fanguo;ZHANG Zilong;MA Dedong(China Railway Shenyang Bureau Group Co.,Ltd.,Shenyang 110001,China;China Railway General Operation and Maintenance Technology Co.,Ltd.,Beijing 100036,China)
出处
《高速铁路技术》
2020年第6期40-44,68,共6页
High Speed Railway Technology
基金
中国铁路总公司科技研究开发计划项目(2017G003-A)。
关键词
高速铁路
线路条件
钢轨打磨
车轮磨耗
车体振动加速度
抖车
high-speed railway
line conditions
rail grinding
wheel wear
vibration acceleration of car body
car shake
