| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound insulation floor structure which can obtain excellent sound insulation performance while reducing the thickness of a floor member by using a precast concrete floor as the floor member, and which inhibits the occurrence of adverse effect in terms of workability and strength.SOLUTION: A fixture 4 is pressed on the lower face side of a flange of a beam 2 by fastening a bolt into an insert nut embedded in a lower face side of a PC floor board 1, and the PC floor board 1 is fixed to the beam 2 while the fixture 4 compresses a beam upper cushioning material 3 by the pressing. A soundproof mat 11, a steel plate 12, and a particle board 13 is disposed on the upper surface side of the PC floor board 1. The particle board 13 is fixed to the steel plate 12 by a screw. |
