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.
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)
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
Beijing metro
anti-vibration fastenings
stiffness and damping of fastenings
rail corrugations
dynamic transfer characteristics
frequency
displacement receptance
