• ISSN 1673-5722
  • CN 11-5429/P

连续型隔振屏障在高速铁路环境振动问题治理中的应用研究

郁雯 刘杰 刘航 李凯

郁雯,刘杰,刘航,李凯,2021. 连续型隔振屏障在高速铁路环境振动问题治理中的应用研究. 震灾防御技术,16(1):157−164. doi: 10.11899/zzfy20210116
引用本文: 郁雯,刘杰,刘航,李凯,2021. 连续型隔振屏障在高速铁路环境振动问题治理中的应用研究. 震灾防御技术,16(1):157−164. doi: 10.11899/zzfy20210116
doi:10.11899/zzfy20210116. doi: 10.11899/zzfy20210116
Citation: doi:10.11899/zzfy20210116. doi: 10.11899/zzfy20210116

连续型隔振屏障在高速铁路环境振动问题治理中的应用研究

doi: 10.11899/zzfy20210116
基金项目: 张家口市科学技术研究与发展指令计划项目(1811009B-02);2020年河北省硕士研究生创新资助项目(CXZZSS2020140);2021年河北省高等学校科学技术研究青年基金项目(QN2021218)
详细信息
    作者简介:

    郁雯,女,生于1981年。硕士,副教授。主要从事铁路隔振领域研究。E-mail:yuwen810224@163.com

Based on the Infinite Element Boundary Analysis, the Study of the Effect of Continuous Barrier on the Environmental Vibration of High-speed Railway

  • 摘要: 为探究高速铁路两侧隔振屏障隔振效果,采用有限元与无限元边界结合的方式进行分析,研究不同连续型隔振屏障及布置形式对隔振效果的影响。通过现场试验与同尺寸、同属性有限元模型对比试验,验证有限元模型合理性。计算结果表明:不同连续型隔振屏障中,空沟隔振效果最优,空沟隔振措施适合高速列车隔振;隔振屏障宽度为0.6~2.5倍波长时,其对隔振效果的影响较小,随着宽度的改变,隔振效果变化幅度较小;隔振屏障深度为3.8~15.2倍波长时,其对隔振效果的影响较明显,随着深度的增加,隔振效果增强;屏障位置对隔振效果的影响较大,建议屏障应靠近路基布置;连续型隔振屏障对高频的隔振效果优于低频。
  • 图  1  试验布置

    Figure  1.  Test layout

    图  2  有限元模型

    Figure  2.  Finite element model

    图  3  隔振曲线

    Figure  3.  Vibration isolation curve

    图  4  路基横断面示意图

    Figure  4.  Subgrade cross section

    图  5  计算模型

    Figure  5.  Calculation model

    图  6  测点位置示意图

    Figure  6.  Position of test points

    图  7  地表加速度云图

    Figure  7.  Acceleration cloud maps on ground surface

    图  8  不同屏障类型的Ar曲线

    Figure  8.  Ar curve of each barrier

    图  9  不同屏障宽度的Ar曲线

    Figure  9.  Ar curves of different widths

    图  10  不同屏障深度的Ar曲线

    Figure  10.  Ar curve of each depth

    图  11  不同振源距的Ar曲线

    Figure  11.  Ar curves of different distances from test point to the foot of roadbed slope

    图  12  不同激振频率的Ar曲线

    Figure  12.  Ar curve of each frequency

    表  1  路基与屏障材料参数

    Table  1.   Material parameters of subgrade

    类型密度/kg·m−3弹性模量/Pa泊松比
    路基表层2 0001.80×1080.250
    路基底层1 9501.10×1080.250
    地基土1 9002.00×1070.300
    轨道板25003.50×10100.167
    钢轨78002.10×10110.300
    支承层25002.70×10100.167
    混凝土板墙24003.00×10100.200
    橡胶板墙12007.80×1060.470
    下载: 导出CSV

    表  2  工况水平组合表

    Table  2.   Table of combination of parameter levels

    水平类型A宽度B/m深度C/m振源距D/m激振频率E/Hz
    1空沟0.53.05.020
    2混凝土板墙1.06.06.060
    3橡胶板墙1.59.07.0130
    42.012.08.0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-10-14
  • 网络出版日期:  2021-07-12
  • 刊出日期:  2021-03-01

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