| 摘要 |
PROBLEM TO BE SOLVED: To provide a vertical vibration control system being applicable to a base-isolated building having a three-dimensional base isolation structure and capable of reducing vibration, in particular, in the vertical direction effectively and properly. SOLUTION: A three-dimensional base isolation device 3 for supporting the base-isolated building in both of the horizontal direction and the vertical direction by base-isolation manner is installed between the base-isolated building 1 and its foundation 2, and a TMD mechanism 10 is arranged in parallel with the three-dimensional base isolation device. The TMD mechanism is constituted to support an inertia mass damper operating when the base-isolated building causes relative vibration in the vertical direction for the foundation by a support member and synchronize a natural period of the TMD mechanism to be fixed by inertia mass generated by the inertia mass damper and rigidity of the support member with a natural period in the vertical direction of the base-isolated building. Such a TMD mechanism that has a configuration supporting a central part of an oscillating arm 12 having a weight 11 mounted in each of both end parts and arranging the oscillating arm within a vertical face in substantially horizontally to oscillate freely is used in this vertical vibration control system. This system includes a damping device 17 for damping the oscillation generated in the oscillating arm. COPYRIGHT: (C)2011,JPO&INPIT
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