成都市域快轨减振措施效果分析

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中文摘要：为评价市域快轨的减振效果,以成都市域快轨18号线某圆形盾构隧道为例,选取了线路条件基本相同的相近断面,对双层非线性减振扣件、减振垫浮置板、钢弹簧浮置板3种减振措施及对应普通道床断面进行现场测试,研究市域快轨减振措施的减振效果.通过对实测数据进行时域、频域和1/3倍频程分析,得到不同减振措施和普通断面的隧道壁最大Z振级(VLZmax),并对比得到不同减振措施的减振效果;通过对测点的隧道壁振动加速度级及地面振动进行1/3倍频程分析,得到振动的传播衰减情况.结果表明:3种减振措施都有减振效果,双层非线性减振扣件减振效果为7.3 dB,减振垫浮置板的减振效果为16.2 dB,钢弹簧浮置板的减振效果最好,达到了19.7 dB.

外文标题：Effectiveness of Vibration Reduction Measures on Chengdu Urban Express

外文摘要：To evaluate the vibration reduction effect of urban express,similar sections with essentially the same line conditions were studied.Different vibration reduction measures and corresponding common overall track bed sections were tested on-site to study the vibration reduction effect of urban express vibration reduction measures.Through the time domain,frequency domain,and one-third octave analysis of the measured data,the vibration reduction measures and maximum Z-vibration level(VLZmax)of the ordinary section of the tunnel wall were obtained,and the vibration reduction effects of different vibration reduction measures were compared.The vibration acceleration of the tunnel wall at the measuring point and the ground vibration were analyzed in one-third of an octave to obtain the propagation attenuation of the vibration.The results show that the three vibration reduction measures reduced vibration.The vibration reduction of the double-layer nonlinear vibration reduction fastener was 7.3 dB;the vibration reduction was 16.2 dB for the vibration damping pad floating plate and 19.7 dB for the steel spring floating plate.

外文关键词：

urban rapid railvibration reduction measuresvibration reduction effectone-third octavedouble-layer nonlinear vibration reduction fastenervibration damping pad floating platespring floating plate

作者：

谢玉梅、贺玉龙、徐鸿、程宇杰、周文祥

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作者单位：

西南交通大学地球科学与环境工程学院,成都 611756

中铁二院工程集团有限责任公司生态环境设计研究院,成都 610031

关键词：

市域快轨减振措施减振效果 1/3倍频程双层非线性减振扣件减振垫浮置板钢弹簧浮置板

基金：

国家自然科学基金项目

项目编号：

52078433

出版年：

2024

DOI：

10.3969/j.issn.1672-6073.2024.01.019

都市快轨交通

北京交通大学,北京城建设计研究总院有限责任公司

都市快轨交通

CSTPCD北大核心

影响因子：0.785

ISSN：1672-6073

年,卷(期)：2024.37(1)

参考文献量15