东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (2): 274-276.DOI: -

• 论著 • 上一篇    下一篇

闭孔泡沫铝声屏障的降噪效果研究

梁李斯;姚广春;穆永亮;王磊;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2008AA03Z512);;

Study on denoising effect of sound barriers made from closed-cell aluminum foam

Liang, Li-Si (1); Yao, Guang-Chun (1); Mu, Yong-Liang (1); Wang, Lei (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Liang, L.-S.
  • About author:-
  • Supported by:
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摘要： 用闭孔泡沫铝板作为高速公路声屏障材料,以沈阳市东西快速干道珠林桥附近安装的几段声屏障为例,对高速公路安装声屏障前后噪声的声压级进行了实地测量,计算得出声屏障的插入损失,以此考察闭孔泡沫铝板声屏障的降噪效果.通过对闭孔泡沫铝声屏障和普通百叶声屏障降噪效果的对比分析,发现闭孔泡沫铝声屏障整体降噪效果优于普通百叶声屏障,在高速公路噪声较强的20～630 Hz频段降噪效果更佳.

关键词: 降噪, 闭孔泡沫铝, 频谱分析, 声屏障, 插入损失

Abstract: The denoising effect of the sound barriers made from closed-cell aluminum foam was investigated taking some sections of the sound barriers located nearby the Zhulin Overcross of the East-West expressway in Shenyang City as examples, where the sound pressure level of noise was measured with spectrum analysis before and after setting the sound barriers there. The denoising effect of closed-cell aluminum foam was evaluated via the insertion loss calculated for such sound barriers. A comparative denoising analysis of sound barrier was made between the closed-cell aluminum foam and conventional window shutters, and the results showed that the denoising effect of the former is superior to that of the latter, especially in the highly-noisy frequency band from 20 to 630?Hz beside the expressway.

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