不同激励作用下钢弹簧浮置板轨道减振效果研究

李林峰, 马蒙, 刘维宁, 杜林林

李林峰, 马蒙, 刘维宁, 杜林林. 不同激励作用下钢弹簧浮置板轨道减振效果研究[J]. 工程力学, 2018, 35(S1): 253-258. DOI: 10.6052/j.issn.1000-4750.2017.05.S048
引用本文: 李林峰, 马蒙, 刘维宁, 杜林林. 不同激励作用下钢弹簧浮置板轨道减振效果研究[J]. 工程力学, 2018, 35(S1): 253-258. DOI: 10.6052/j.issn.1000-4750.2017.05.S048
LI Lin-feng, MA Meng, LIU Wei-ning, DU Lin-lin. Analysis for the vibration reduction characteristics of steel spring floating slab tracks under different types of excitation[J]. Engineering Mechanics, 2018, 35(S1): 253-258. DOI: 10.6052/j.issn.1000-4750.2017.05.S048
Citation: LI Lin-feng, MA Meng, LIU Wei-ning, DU Lin-lin. Analysis for the vibration reduction characteristics of steel spring floating slab tracks under different types of excitation[J]. Engineering Mechanics, 2018, 35(S1): 253-258. DOI: 10.6052/j.issn.1000-4750.2017.05.S048

不同激励作用下钢弹簧浮置板轨道减振效果研究

基金项目: 国家自然科学基金项目(51508022)
详细信息
    作者简介:

    马蒙(1983-),男,四川成都人,副教授,博士,主要从事轨道交通环境振动研究(E-mail:mameng@bjtu.edu.cn);刘维宁(1960-),男,江西人,教授,博士,主要从事地下工程与铁道工程研究(E-mail:wnliu@bjtu.edu.cn);杜林林(1988-),男,河南周口人,博士生,主要从事车辆轨道耦合模型和环境振动研究(E-mail:linlindu07@163.com).

    通讯作者:

    李林峰(1990-),男,黑龙江大庆人,博士生,主要从事环境振动与隧道结构动力学研究(E-mail:rooneyisthebest@163.com).

  • 中图分类号: U211.3

Analysis for the vibration reduction characteristics of steel spring floating slab tracks under different types of excitation

  • 摘要: 为了研究不同激励作用下钢弹簧浮置板轨道的减振效果,该文建立了二维车辆-轨道耦合动力有限元模型,考虑了普通整体道床和钢弹簧浮置板轨道两种轨道型式,对比和分析了在冲击荷载、移动常力和移动列车荷载作用下,两种轨道结构的振动响应,并通过插入损失评价不同荷载作用下钢弹簧浮置板轨道的减振效果。结果表明:①与移动常力作用相比,冲击荷载会高估钢弹簧浮置板轨道的减振效果。②与移动单节车辆作用相比,冲击荷载在钢弹簧浮置板轨道自振频率以下频段会低估其减振效果,在125 Hz~400 Hz频段内会高估减振效果。
    Abstract: To investigate the vibration reduction characteristics of steel spring floating slab tracks (FSTs) under different types of excitation, a two-dimensional train-track coupling dynamic finite element model was established, and two kinds of track types of monolithic track and spring steel floating slab track were considered. The impact load, the moving constant load and the train load were used to study the vibration responses of the track structure in terms of insert loss. The results indicated that:1) Compared with the moving constant load, the impact load overestimated the vibration reduction characteristics of FSTs; 2) Compared with the moving single vehicle, the vibration reduction characteristics of FSTs was underestimated below FST natural frequency under the impact load and was overestimated between 125 Hz and 400 Hz.
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  • 被引次数: 17
出版历程
  • 收稿日期:  2017-05-26
  • 修回日期:  2017-11-13
  • 刊出日期:  2018-06-29

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