热科学学报（英文版）2008，Vol.17Issue(3)：218-223,6.
Characteristics of a compression wave propagating over porous plate wall in a high-speed railway tunnel
Characteristics of a compression wave propagating over porous plate wall in a high-speed railway tunnel
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作者信息
- 1. Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan
- 折叠
摘要
Abstract
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 a11eviative method using the porous plate wall in a tunnel关键词
High-speed railway tunnel/Compression wave/Micro-pressure wave/Porous wall/Alleviative methodKey words
High-speed railway tunnel/Compression wave/Micro-pressure wave/Porous wall/Alleviative method分类
数理科学引用本文复制引用
..Characteristics of a compression wave propagating over porous plate wall in a high-speed railway tunnel[J].热科学学报（英文版）,2008,17(3):218-223,6.
