| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceiling structure capable of reducing a heavy floor impact noise by a simple construction from a lower story room, and also to provide a method of constructing the ceiling structure and a building having the ceiling structure. <P>SOLUTION: A ceiling member 44 is installed below a floor slab 12. A damping device 30 comprising a weight member 16 and a viscoelastic body 26 is installed on the upper surface of the ceiling member 44. When the heavy floor impact noise is generated above the floor slab 12, the noise is transmitted to the ceiling member 44. The vibration of the ceiling member 44 is suppressed by the damping effect of the damping device 30, and the heavy floor impact noise emitted from the ceiling member 44 into a lower story room R<SB>1</SB>is reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT |
