| 摘要 |
PROBLEM TO BE SOLVED: To provide a floating floor structure with superior withstand load performance, vibration control performance, and sound insulating performance by using synthetic resin foaming bodies different in compressive strength as a cushioning body. SOLUTION: This floating floor structure is constituted so that the cushioning body is arranged on a floor slab, a floor part is arranged on the cushioning body, and a load of the floor part is supported via the cushioning body, and is composed of the synthetic resin foaming body A having 0.01 to 0.50 N/cm<2> , 5% strain compressive strength, and the synthetic resin foaming body B having 0.51 N/cm<2> to 20 N/cm<2> . It has 0.8-10×10<6> N/m<3> of a dynamic spring constant in 250 kg/m<2> loaded mass of the cushioning body.
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