| 摘要 |
PROBLEM TO BE SOLVED: To provide a floating floor vibration control device capable of obtaining specified vibration control performance even with the large change of load on a floating floor and excellent in durability. SOLUTION: A floating floor 3 is floatingly supported on a floor slab 1 through a support member 2. The support member 2 is provided with elastic bodies 21-23 arranged one on top of another in three series stages in the vertical direction, a first plate 25 interposed between the upper and middle stage elastic bodies 21, 22, and a second plate 26 interposed between the middle and lower stage elastic bodies 22, 23. The upper stage elastic body 21 has a smallest spring constant, the lower stage elastic body 23 has a largest spring constant, and the middle stage elastic body 22 has a medium spring constant. A first stopper 25a for limiting the compression quantity of the upper stage elastic body 21 is formed at the first plate 25, and a second stopper 26a for limiting the compression quantity of the middle stage elastic body 22 with the larger set load than the set load for limiting the compression quantity of the upper stage elastic body 21 is formed at the second plate 26.
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