Characteristics of a compression wave propagating over porous plate wall in a high-speed railway tunnel

Toshiyuki Aoki, J. Yamamoto, K. Nagatani

研究成果: ジャーナルへの寄稿記事

抄録

A pressure wave is generated ahead of a high-speed train, while entering a tunnel. This pressure wave propagates to the tunnel exit and spouts as a micro-pressure wave, which causes an exploding sound. From the fact that the ballast track tunnel has smaller noise than the slab track tunnel, we have suggested a new inner tunnel model to decrease the noise of the micro-pressure wave, using the ballast effect. Experimental and numerical investigations are carried out to clarify the attenuation and distortion of propagating compression wave over porous plate wall in a model tunnel. Data shows that the strength of the compression wave and a maximum pressure gradient of the compression wave was weakened. These data shows the possibility of the present alleviative method using the porous plate wall in a tunnel.

元の言語英語
ページ(範囲)218-223
ページ数6
ジャーナルJournal of Thermal Science
17
発行部数3
DOI
出版物ステータス出版済み - 9 1 2008

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porous plates
compression waves
tunnels
high speed
elastic waves
ballast
pressure gradients
slabs
attenuation
acoustics
causes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

これを引用

Characteristics of a compression wave propagating over porous plate wall in a high-speed railway tunnel. / Aoki, Toshiyuki; Yamamoto, J.; Nagatani, K.

:: Journal of Thermal Science, 巻 17, 番号 3, 01.09.2008, p. 218-223.

研究成果: ジャーナルへの寄稿記事

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