Practical use of an additional noise barrier for high speed train

Daigo Sato, Masakazu Kiyama, Takefumi Kozasa, Akira Omoto

Research output: Contribution to conferencePaper

Abstract

Additional noise barriers made of transparent polycarbonate are installed on the existing concrete noise barriers to improve noise reduction effect for the high speed train. The height of the additional noise barriers are limited with due consideration on structural strength of the viaduct. The higher the additional noise barriers installed are, the larger the wind load acting on the viaduct is. Therefore, it is inevitable to reinforce the viaduct sufficiently for raising the height of noise barriers than ever before. The authors have proposed a novel noise barrier which can reduce the wind load by swing mechanism. In a strong wind condition, a part of the noise barrier opens to reduce the burden to the viaduct, while it keeps closing to work as a noise barrier in an ordinary wind condition. In this study, sound reduction index of the proposed noise barrier was measured by sound intensity method. The swing mechanical structure was examined by wind tunnel tests and a field test. As a result, it was confirmed that the noise insulation performance was sufficient and the swing mechanism was efficient in reducing a wind load acting on a viaduct.

Original languageEnglish
Publication statusPublished - Jan 1 2018
Event47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States
Duration: Aug 26 2018Aug 29 2018

Other

Other47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018
CountryUnited States
CityChicago
Period8/26/188/29/18

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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    Sato, D., Kiyama, M., Kozasa, T., & Omoto, A. (2018). Practical use of an additional noise barrier for high speed train. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.