| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent vibration from directly transmitting to a structure such as an experiment facility, and hold a main body structure without vibrating by mounting first permanent magnet on an upper surface of a foundation side structure, and mounting a second permanent magnet which is faced to an upper part of the first permanent magnet and which is magnetically repelled, on a lower surface of the main body structure. SOLUTION: In the case where an experiment facility 1 is held on a facility base 2 in a non-vibration condition, the experiment facility 1 is base isolation-supported on, for example, a rubber made pad 3 disposed on the facility base 2 through base isolation supporting devices 4 disposed, for example, on four corners of the experiment facility 1. Each base isolation supporting device 4 is formed in such a constitution that plate shaped permanent magnets 8, 17 disposed on an upper surface and a side surface of a square block main body 7 in a foundation side structure 5 fixed to the pad 3, and plate shaped permanent magnets 13, 16 disposed on a lower surface and a side surface of the square block main body 12 in a main body structure 9 fixed to a lower surface part of a support base 10 of the experiment facility 1, are faced to face in a condition in which respective magnets are repelled each other. It is thus possible to prevent vibration from directly transmitting to the main structure.
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