Title:
SOUND ABSORBING DEVICE FOR RAILWAY TUNNEL PORTAL, AND METHOD OF MOUNTING CERAMIC SOUND ABSORBING PANELS
Document Type and Number:
Japanese Patent JP3832834
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique of alleviating noise at a railway tunnel portal by means of ceramic sound absorbing panels.
SOLUTION: According to the technique, the plurality of ceramic sound absorbing panels 1 are arranged and fixed side by side to existing buffer works 9. Then a rear surface blocking plate 13 forming a microbarometric wave passage is set between each ceramic sound absorbing panel 1 and a microbarometric wave buffer member 11 of the existing buffer works 9, and therefore a rear air layer for improving a sound absorbing effect is formed, whereby microbarometric waves are alleviated by the microbarometric wave buffer member 11.
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Inventors:
Uchinobu
Tadahiko Hara
Seki Shiro
Akira Asahi
Kenji Rikitake
Masatake Ogata
Kyoji Fujiwara
Ryoichi Takahashi
Shunichi Yoshida
Tadahiko Hara
Seki Shiro
Akira Asahi
Kenji Rikitake
Masatake Ogata
Kyoji Fujiwara
Ryoichi Takahashi
Shunichi Yoshida
Application Number:
JP2003161552A
Publication Date:
October 11, 2006
Filing Date:
June 06, 2003
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
Research Institute for Road Safety and Environment
Masatake Ogata
West Japan Railway Company
Research Institute for Road Safety and Environment
Masatake Ogata
West Japan Railway Company
International Classes:
E01B19/00; G10K11/16; G10K11/162; (IPC1-7): E01B19/00; G10K11/16; G10K11/162
Domestic Patent References:
| JP2001248390A | ||||
| JP2002309520A | ||||
| JP2002242129A | ||||
| JP10025711A | ||||
| JP2002227141A | ||||
| JP2003129428A |
Attorney, Agent or Firm:
Toshiro Mitsuishi
Tadahiro Mitsuishi
Yasuyuki Tanaka
Hiroshi Matsumoto
Tadahiro Mitsuishi
Yasuyuki Tanaka
Hiroshi Matsumoto