基于FE-SEA混合法列车交会对桥梁振动与结构噪声分析
DOI:
作者:
作者单位:

1.华东交通大学土木建筑学院;2.江西外语外贸职业学院;3.中山市东升镇住房和城乡建设局

作者简介:

通讯作者:

中图分类号:

U448.21+5 ;TB534

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)


Analysis of bridge vibration and structure noise based on FE-SEA hybrid method for train rendezvous
Author:
Affiliation:

School of Civil Engineering and Architecture, East China Jiaotong University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    基于有限元-统计能量(FE-SEA)混合法,建立钢-混结合梁桥模型,在列车运行速度为200km/h、列车交汇条件下,预测桥梁各板块的振动响应及结构噪声。结果表明,当列车交会时:(1)各板块中点处的振动加速度级均有所增大,优势频段为40~120Hz,峰值频率在65Hz。(2)在全频段内,各板块声压级均增大;单向行驶和列车交会两种状态下的各板块声压级峰值频率在500Hz,腹板和下翼缘的声压级变化规律较为相似。(3)桥梁各板块能量级在全频段内均增大,腹板能量级最大,在频率为100Hz时,腹板和下翼缘的振动能量级出现拐点,该频率对能量级的影响最大。

    Abstract:

    Based on the finite element-statistical energy (FE-SEA) hybrid method, this paper establishes a steel-concrete composite beam bridge model, and predicts the vibration response and structural noise of each plate of the bridge under the conditions of train running speed of 200km/h and trains crossing . The results show that when trains cross: (1) The vibration acceleration level at the midpoint of each plate increases, the dominant frequency band is 40-120 Hz, and the peak frequency is 65 Hz. (2) In the whole frequency band, the sound pressure level of each plate increases; the peak frequency of the sound pressure level of each plate in the two states of one-way driving and train crossing is at 500Hz, and the sound pressure level of the web and lower flange changes law More similar. (3) The energy level of each plate of the bridge increases in the whole frequency band, and the energy level of the web is the largest. When the frequency is 100Hz, the vibration energy level of the web and the lower flange has an inflection point, indicating that the frequency has the greatest impact on the energy level .

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-01-08
  • 最后修改日期:2021-01-20
  • 录用日期:2021-01-20
  • 在线发布日期:
  • 出版日期: