地铁扣件刚度和阻尼对钢轨异常波磨的影响  

Impact of Rail Fastenings' Stiffness and Damping on Abnormal Rail Corrugation

作　　者：谷爱军[1] 刘维宁[1] 张厚贵[1] 孙鑫[2] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京市轨道交通建设管理有限公司,北京100037

出　　处：《都市快轨交通》2011年第3期17-21,共5页Urban Rapid Rail Transit

基　　金：北京市科委课题(Z101106000410004)

摘　　要：根据目前北京地铁隧道内和桥梁上减振器扣件轨道结构面临的钢轨异常波磨问题,分别建立地铁隧道内和桥梁上整体道床轨道结构的垂向振动分析模型,分析对比两种基础上钢轨的垂向动力传递特性,讨论扣件刚度和阻尼对其动力特性的影响,最后给出此类波磨的控制建议。Considering the severe abnormal rail corrugations appearing on the anti-vibration（egg）fastening tracks both in tunnels and on bridges of Beijing metro lines,corresponding vertical dynamic models were established.The vertical vibration transfer characteristics of rails were calculated and analyzed respectively;the effects of stiffness and damping of rail fastenings on the track dynamic characteristics were analyzed.Suggestions to mitigate this type of rail corrugations were proposed.

关 键 词：北京地铁 减振器 扣件刚度和阻尼 钢轨波磨 动力传递特性 频率 位移导纳 

分 类 号：U213.4[交通运输工程—道路与铁道工程]