| 摘要 |
PROBLEM TO BE SOLVED: To improve sound insulation performance in a bass area, by reducing a resonance transmission phenomenon in a hollow double wall, without causing an increase in a finishing dimension and a large burden increase in cost. ! SOLUTION: The hollow double wall is constituted of a concrete wall 1 and a gypsum board 6 installed in a stud of a lightweight steel frame backing (b) composed of an upper runner 3 and a lower runner 4 fixed to the upper floor side and the lower floor side and the stud 5 erected in a state of inserting an upper end part and a lower end part into the upper runner and the lower runner, a foam resin swing preventive support material 7 is filled between the concrete wall and a stud back face, and a vibration-proof face bar 8 is interposed between the swing preventive support material and the concrete wall in a noncontact state. ! COPYRIGHT: (C)2015,JPO&INPIT |
