地铁隧道内钢弹簧浮置板轨道的减振效果实测分析  

On-site Measurement and Analysis of Vibration Reduction Effect of Steel Spring Floating Slab Track in Metro Tunnel

作　　者：黄俊飞 秦佳良 HUANG Junfei;QIN Jialiang(GERB(Qingdao)Vibration Control Co.,Ltd.,266108,Qingdao,China;不详)

机构地区：[1]隔而固(青岛)振动控制有限公司,青岛266108 [2]华东交通大学土木建筑学院,南昌330013

出　　处：《城市轨道交通研究》2020年第1期83-86,共4页Urban Mass Transit

摘　　要：为了研究地铁隧道内浮置板轨道的实际减振效果,以我国某地铁线路的隧道段为研究对象,测试了普通道床轨道、重量级和中量级浮置板轨道产生的振动响应,分别在时域和频域内对各种轨道的振动特性进行对比分析,并采用Z振级进行综合评价,结果表明:轨道板和隧道壁的主要响应频段在80 Hz附近;重量级和中量级钢弹簧浮置板道床振动响应有5.3 dB的差异;各减振断面的隧道壁振动均满足相关规范的要求。In order to study the actual vibration reduction effect of floating slab track in metro tunnel,a tunnel section on metro line in China is taken as the research objective.The vibration responses of ordinary track bed,heavyweight and medium-sized floating slab track are tested within a certain domain of time and frequency,the vibration characteristics of various tracks are compared and analyzed,and the Z vibration level is adopted for a comprehensive evaluation.The results show that the main response frequency bands of track slab and tunnel wall are near 80 Hz;the vibration response of floating slab bed of heavyweight and medium-weight has a 5.3 dB difference,the vibration of tunnel wall of each vibration reduction section could meet the requirements of relevant codes.

关 键 词：地铁 轨道 钢弹簧浮置板 插入损失 减振效果 

分 类 号：U213.2+42[交通运输工程—道路与铁道工程] U211.3