Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
NOISE REDUCTION DEVICE
To provide a noise reduction device which uses a balloon-type sound absorber utilizing membrane vibration type sound absorbing characteristics as a noise reduction medium, and significantly contributes to reduction of whole noise by effectively reducing a diffraction sound among the noises generated from a noise source.SOLUTION: In a noise reduction device comprising a sound insulation wall erected on a ground and the like and a balloon type sound absorber provided on a wall surface part of an upper end part of the sound insulation wall, the sound insulation wall is a single-layer wall structure; and the balloon type sound absorber is provided on a wall surface part on a noise source side of an upper end part of the sound insulation wall of the single-layer wall structure and/or on an opposite side of the noise source side; a resonance frequency in a state in which the inside is expanded by filling air is formed so as to have an appropriate surface density and air layer thickness for reducing construction noise and the like.SELECTED DRAWING: Figure 1
【課題】騒音低減媒体として膜振動型の吸音特性を利用したバルーン型吸音体を用い、騒音源から発せられる騒音のうち、特に回折音を効果的に低減することにより騒音全体の低減に大きく寄与する騒音低減装置を提供する。【解決手段】地面等へ立設される遮音壁と、前記遮音壁の上端部の壁面部に設けられるバルーン型吸音体とからなる騒音低減装置であって、前記遮音壁は、単層壁構造であり、前記バルーン型吸音体は、前記単層壁構造の遮音壁の上端部の騒音源側及び／又は騒音源側とは反対側の壁面部に設けられ、その内部に空気を充填して膨張させた状態での共振周波数が、工事等の騒音を低減させるのに適正な面密度および空気層厚さを備えるように形成されている。【選択図】図１
NOISE REDUCTION DEVICE
To provide a noise reduction device which uses a balloon-type sound absorber utilizing membrane vibration type sound absorbing characteristics as a noise reduction medium, and significantly contributes to reduction of whole noise by effectively reducing a diffraction sound among the noises generated from a noise source.SOLUTION: In a noise reduction device comprising a sound insulation wall erected on a ground and the like and a balloon type sound absorber provided on a wall surface part of an upper end part of the sound insulation wall, the sound insulation wall is a single-layer wall structure; and the balloon type sound absorber is provided on a wall surface part on a noise source side of an upper end part of the sound insulation wall of the single-layer wall structure and/or on an opposite side of the noise source side; a resonance frequency in a state in which the inside is expanded by filling air is formed so as to have an appropriate surface density and air layer thickness for reducing construction noise and the like.SELECTED DRAWING: Figure 1
【課題】騒音低減媒体として膜振動型の吸音特性を利用したバルーン型吸音体を用い、騒音源から発せられる騒音のうち、特に回折音を効果的に低減することにより騒音全体の低減に大きく寄与する騒音低減装置を提供する。【解決手段】地面等へ立設される遮音壁と、前記遮音壁の上端部の壁面部に設けられるバルーン型吸音体とからなる騒音低減装置であって、前記遮音壁は、単層壁構造であり、前記バルーン型吸音体は、前記単層壁構造の遮音壁の上端部の騒音源側及び／又は騒音源側とは反対側の壁面部に設けられ、その内部に空気を充填して膨張させた状態での共振周波数が、工事等の騒音を低減させるのに適正な面密度および空気層厚さを備えるように形成されている。【選択図】図１
NOISE REDUCTION DEVICE
騒音低減装置
TANABE KOTA (Autor:in) / OMURA KEISUKE (Autor:in) / SUZUKI KAZUNORI (Autor:in) / KOYANAGI SHINICHIRO (Autor:in) / TSURUHA TAKUMOTO (Autor:in)
06.02.2020
Patent
Elektronische Ressource
Japanisch
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
E04G
SCAFFOLDING
,
Baugerüste
/
E04H
Gebäude oder ähnliche Bauwerke für besondere Zwecke
,
BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES
/
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
NOISE REDUCTION DEVICE, COMPACTION PLATE, COMPACTION DEVICE AND NOISE REDUCTION METHOD
| Europäisches Patentamt | 2017