轮轨振动对高铁扣件伤损的影响分析  

On Impact of Wheel-rail Vibration on HSR Fastener Damage

作　　者：肖俊恒[1] 闫子权[1] 涂英辉[1] 李伟[1] 郝有生 方杭玮[1] 孙林林 

机构地区：[1]中国铁道科学研究院铁道建筑研究所,北京100081

出　　处：《中国铁路》2017年第11期10-14,共5页China Railway

基　　金：中国铁路总公司科技研究开发计划项目(2017G011-A)

摘　　要：高速铁路在长期运营中会出现钢轨波浪形周期性磨耗和动车组车轮多边形周期性磨耗,轮轨发生周期性磨耗后,轮轨间动力作用增大,且产生高频激励。分析高速铁路钢轨波磨和动车组车轮多边形磨耗引起的轮轨间高频激励,揭示了轮轨高频激励与扣件弹条固有频率接近时导致弹条产生共振,从而造成弹条伤损的重要机理,并在多个现场案例中得到验证。During the long-term operation of high-speed railways,periodic corrugation of rails and periodic polygonal wears of EMU wheelsets might occur.These periodic wears of wheels and rails lead to increased dynamic interaction between the two increases and high frequency excitation occurs.This paper looks into the high-frequency excitation between wheels and rails caused by rail corrugation of and polygonal wears of EMU wheels,finds out that resonance occurs when the high-frequency wheel-rail excitation and the natural frequencies of fasteners and clips are close to each other and thus damages clips.This important mechanism is validated in several on-site cases.

关 键 词：轮轨周期性磨耗 高频振动 钢轨波磨 车轮多边形 钢轨扣件 

分 类 号：U213.5[交通运输工程—道路与铁道工程] U211.3