CEILING SYSTEM ABSORBING BOTTOM CRASHING SOUND OF STEEL-SKELETON BUILDING

摘要

PURPOSE: A ceiling system absorbing a bottom crashing sound of a steel-skeleton building is provided to absorb a crashing sound generated at the bottom of a steel-skeleton building effectively using a dustproof binder, a sound-absorbing panel, and a sound-absorbing film. CONSTITUTION: A ceiling system absorbing a bottom crashing sound of a steel-skeleton building comprises many hanger bolts(1) combined to the lower part of a steel skeleton, a hanger clip(3) fixed to the hanger bolts, a ceiling(4) combined to the hanger clip, a finishing panel such as a plaster board, plywood, etc. combined to the ceiling and used for finishing, a dustproof binder(10) located between the hanger bolt and the hanger clip to restrain vibration caused by an impact and to decrease the transmission of a crashing sound, a sound-absorbing material attached onto the inside of the finishing panel to absorb the noise occurring in the ceiling, a sound-absorbing film(30) located between the hanger bolts to absorb the noise in a low frequency area, wherein many irregularities are formed on the surface of the sound-absorbing material to improve the effect of sound-absorbing.