谐振式浮轨扣件与单趾弹簧扣件减振效果对比研究  

Comparative Study on Damping Effect of Re-sonant Floating Rail Fastener and Single Toe Spring Fastener

作　　者：刘博[1] 姜杉 董慧 LIU Bo;JIANG Shan;DONG Hui(No.3 Branch of Beijing Subway Co.,Ltd.,102208,Beijing,China;不详)

机构地区：[1]北京市地铁运营有限公司运营三分公司,北京102208 [2]北京市地铁运营有限公司,北京100044

出　　处：《城市轨道交通研究》2023年第1期105-109,共5页Urban Mass Transit

摘　　要：为了比较谐振式浮轨扣件与单趾弹簧扣件在轨道减振中的应用效果,采用有限元分析方法,对比这两种扣件的减振效果优劣。基于现场实测数据,分析了广州地铁5号线鱼珠站—大沙地站区间上、下行线路以谐振式浮轨扣件取代原有单趾弹簧扣件前后,在同一测点处的轨道动态变形及振动情况。此外,还对敏感建筑物振动及二次辐射噪声变化水平进行了测试分析。研究结果表明:谐振式浮轨扣件对轮轨振动的减弱效果显著,其对周围环境中二次结构噪声的降低效果也优于单趾弹簧扣件。To compare the application effect of resonant floating rail fastener and single toe spring fastener in track vibration reduction,finite element analysis is adopted to compare the merits and demerits of their dumping effect.Based on field measured data,in the case of Guangzhou Metro Line 5 interval up and down lines between Yuzhu Station and Dashadi Station,the track dynamic deformation and vibration condition at the same measuring point before and after replacing resonant floating rail fastener with single toe spring fastener is analyzed.In addition,test analysis is carried out on sensitive building vibration and the change level of secondary radiation noise level.Research results show that resonant floating rail fastener has a significant effect on reducing wheel-rail vibration,and the effect on reducing secondary structural noise in surrounding environment is also better than that of single toe spring fastener.

关 键 词：城市轨道交通 钢轨 谐振式浮轨扣件 减振效果 

分 类 号：U213.53[交通运输工程—道路与铁道工程]