高速铁路钢轨波磨对轮轨系统振动响应的影响分析  

Effect of Rail Corrugation on Vibration Response of Wheel-Rail System in High Speed Railway

作　　者：贾昕昱 黎国清 刘秀波 JIA Xinyu;LI Guoqing;LIU Xiubo(Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院研究生部,北京100081 [2]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081

出　　处：《铁道建筑》2020年第12期109-112,共4页Railway Engineering

基　　金：国家万人计划(2018YJ-200)。

摘　　要：通过建立轮轨瞬态滚动接触有限元模型,计算不同车速和不同轮轨摩擦因数下车辆通过波磨区段时的轮轨作用力,并分析其对轮轨系统振动响应的影响。结果表明:车辆通过钢轨波磨区段时,轮轨作用力的波长与波磨的波长基本一致。当车速在200~350 km/h时,随着速度的提升,轮轨作用力增大,在扣件处产生的振动能量也随之增加;当摩擦因数在0.3~0.5时,随着摩擦因数的增加,轮轨纵向力增大。波磨波峰处的轮轨纵向力大于波磨波谷处,因此波磨不会无限制地发展而是逐渐趋于稳定。摩擦因数的改变对轮轨垂向力的影响很小,可以忽略。Based on establishing the wheel-rail transient rolling contact finite element model,the wheel-rail force was calculated under different vehicle speeds and wheel-rail friction factor when the vehicle passes through the corrugation section,and its influence on the vibration response of the wheel-rail systems was analyzed.The results show that the wavelength of wheel-rail force is basically the same as that of corrugation when vehicle passes through rail corrugation section.When the vehicle speed is 200~350 km/h,the wheel-rail force increases and the vibration energy at the fastener also increases with the increase of speed.When the friction factor is from 0.3 to 0.5,the wheel-rail longitudinal force increases with the increase of friction factor.The wheel-rail longitudinal force at the corrugation crest is greater than that at the corrugation trough,so the corrugation will not develop without limit,but gradually tends to be stable.The change of friction factor has little effect on wheel-rail vertical force,which could be ignored.

关 键 词：高速铁路 钢轨波磨 数值模拟 瞬态滚动接触模型 轮轨作用力 车速 轮轨摩擦因数 

分 类 号：U211.5[交通运输工程—道路与铁道工程]