DOUBLE FLOOR STRUCTURE IN MULTIPLE DWELLING HOUSE OR THE LIKE

摘要

PROBLEM TO BE SOLVED: To reduce the noise generated from a floor surface of a multiple dwelling house or the like. SOLUTION: A floor plate 2 supported by a support leg 1 put on a floor slab S is first supported in a condition in which a vibration control member 6 made of a rubber flat plate is provided to reduce the noise transmitted to a house at a lower floor. Secondly, a bed plate 3 is constituted by nipping a buffer member 9 in a sandwich manner between a pair of rigid plates 7 and 8 to reduce the generation of noise. Thirdly, a pair of rigid plates 7, 8 nipping the buffer member 9 having different thicknesses and qualities are combined to differ the number of inherent vibration so as to reduce the generation and transmission of impulsive sound. Consequently, it is possible to reduce the transmission of impulsive sound to the house at the lower floor inexpensively by adopting the combination of the three means.