| 摘要 |
PROBLEM TO BE SOLVED: To provide a seismic isolation device for sufficiently maintaining vibration damping property without damaging vibration damping alloys. SOLUTION: A plurality of elastically deformable rubber rings 18 and a plurality of disc-shaped metal pates 20 for maintaining rigidity are alternately arranged to form an outside laminate 16. In a space of each of rubber rings 18 partitioned with a metal plate 20 at a central portion of the outside laminate 16, the vibration damping alloy 22 is fitted which is formed of a zinc-aluminum alloy superplastic metal into a cylindrical shape. Thus, the plurality of vibration damping alloys 22 are arranged between the metal plates 20 side by side with the rubber rings 18. COPYRIGHT: (C)2007,JPO&INPIT
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