THE SOUNDPROOF STRUCTURE FOR A CRASHING SOUND FROM THE BOTTOM

摘要

A floor impact sound insulation structure is provided to prevent the transfer of floor impact sound and vibration to the lower floor through a floor slab layer by filling up with materials having high sound insulating and sound absorbing efficiencies. The floor impact sound insulation structure contains: a floor slab layer(100) composed of reinforcing bars; a horizontal shock absorbing layer(200) composed of a sound insulating material layer(210) made with polyethylene or ethylene vinyl acetate and a sound absorbing material layer(220) made with non-woven fabrics, and installed on the floor slab layer and a wall(110) to cut off floor impact sound and to prevent the transfer of floor impact sound to the wall; a thermal laminated polyolefin foam layer(230) installed to the center of the horizontal shock absorbing layer and divided into a lattice structure to guide diffraction and interference of impact sound and to improve sound insulating effect; a vertical shock absorbing layer(250) composed of a sound insulating material layer(210') made with polyethylene foam and a sound absorbing material layer(220') made with non-woven fabrics; an empty space layer(240) surrounded with the top of the floor slab layer, the side of the horizontal shock absorbing layer, the bottom of the vertical shock absorbing layer and the wall to reduce various impact sound generated between the upper and lower floors; a thermal insulating layer(300) made of autoclaved lightweight concrete and placed on the horizontal shock absorbing layer to increase thermal insulating effect; and a finishing layer(400) made of mortar and arranged with heating pipes inward.