SOUND INSULATION FLOOR STRUCTURE

To provide a sound insulation floor structure capable of effectively improving the sound insulation performance by arranging cushioning materials of different thicknesses in combination and holding the floor materials at different compression ratios for each cushioning material.SOLUTION: The sound insulation floor structure in which a plurality of shock absorbing materials are arranged on the upper surface of a beam and a plurality of floor boards are laid on the upper surface of the shock absorbing material, in which the shock absorbing material has a thick first shock absorber and a thin second shock absorber, and the first cushioning material and the second cushioning material are juxtaposed in the direction in which the floor plate of the upper surface of the beam extends, and the floorboard is configured to contact the second cushioning material by the first cushioning material being compressed under the load of the floorboard.SELECTED DRAWING: Figure 1 【課題】 厚みの異なる緩衝材を組み合わせて配置し、それぞれの緩衝材が異なる圧縮比率で床材を保持することで、効果的に遮音性能を向上させる遮音床構造を提供する。【解決手段】 梁の上面に複数の緩衝材が配置され、緩衝材の上面に複数の床板を敷設する遮音床構造であって、緩衝材は、厚みの厚い第一緩衝材と、厚みの薄い第二緩衝材と、を有し、第一緩衝材と第二緩衝材とが、梁の上面の床板が延在する方向に並設されており、第一緩衝材が床板の荷重を受けて圧縮されることで床板が第二緩衝材と接するように構成されている。【選択図】 図１