| 摘要 |
PURPOSE: A double sandwich sound-absorbing panel for construction is provided to ensure better sound-absorbing performance than an existing panel by the connecting of an insulating member and a resonant sound-absorbing member(40) between surface and rear steel plates. CONSTITUTION: A double sandwich sound-absorbing panel for construction comprises a rear steel plate(10), a surface steel plate(11), an insulating member(20) and a resonant sound-absorbing member(40). The surface steel plate is installed to face the rear steel plate. A plurality of sound-wave transmitting holes(12) are formed on the surface steel plate. The insulating member is filled between the surface and rear steel plates. The resonant sound-absorbing member is installed between the surface steel plate and the insulating member. The resonant sound-absorbing member absorbs sound waves, which have been transmitted through the sound-wave transmitting holes. The resonant sound-absorbing member comprises a plurality of protrusions, a first sound-absorbing space and a second sound-absorbing space. |
