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Decay rate of rail with egg fastening system using tuned rail damper

机译:使用调谐轨道阻尼器的鸡蛋紧固系统衰变速度

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摘要

In order to study the decay rate of the rail in some section of Beijing metro using the egg fastening system, a cellular rail model based on the spectral element method is established. In combination with Bloch theorem, the decay rate of the rail with the egg fastening system is hereby studied. On this basis, the influence of tuned rail damper (TRD) on the decay rate of the rail is analyzed. At present, the decay rate of the rail with the egg fastening system is relatively low, in the frequency range from 200 Hz to 400 Hz. The influence of the egg fastening system on the decay rate of the rail is mainly reflected in the frequency range below 450 Hz. TRD can greatly increase the decay rate of the rail in the vicinity of its operating frequency. Moreover, TRD damping can increase the decay rate of the rail, which is beneficial in controlling rail vibration. Rail vibration can be better controlled by increasing the weight of TRD when the operating frequency is constant. The installation position of TRD also affects the decay rate of the rail. Appropriate adjustment of this position can more effectively suppress rail vibrations over a wider frequency range. (C) 2020 Elsevier Ltd. All rights reserved.
机译:为了使用鸡蛋固定系统研究北京地铁某些部分的铁路衰减率,建立了一种基于谱元法的蜂窝轨道模型。与Bloch定理结合,本发明研究了带鸡蛋固定系统的轨道衰减速率。在此基础上,分析了调谐轨道阻尼器(TRD)对轨道衰减率的影响。目前,带鸡蛋紧固系统的轨道的衰减率相对较低,频率范围为200Hz至400Hz。鸡蛋紧固系统对轨道衰减率的影响主要反映在450Hz以下的频率范围内。 TRD可以大大提高其运行频率附近轨道的衰减率。此外,TRD阻尼可以增加轨道的衰减率,这在控制轨道振动中是有益的。通过增加当工作频率恒定的TRD的重量,可以更好地控制轨道振动。 TRD的安装位置也会影响轨道的衰减率。适当调整该位置可以更有效地抑制更宽频率范围内的轨道振动。 (c)2020 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Applied Acoustics》 |2021年第1期|107622.1-107622.10|共10页
  • 作者单位

    Southeast Univ Sch Transportat Nanjing Peoples R China;

    Minist Educ Key Lab Rd & Traff Engn Shanghai Peoples R China|Shanghai Key Lab Rail Infrastruct Durabil & Syst Shanghai Peoples R China;

    Beijing Jiaotong Univ Sch Civil Engn Beijing Peoples R China;

    Minist Educ Key Lab Rd & Traff Engn Shanghai Peoples R China|Shanghai Key Lab Rail Infrastruct Durabil & Syst Shanghai Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Underground railway; Egg fastening system; Rail damper; Spectral element method; Decay rate;

    机译:地下铁路;鸡蛋固定系统;轨道阻尼器;光谱元素法;衰减率;

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