Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Relative motion means between a structure and its foundation
Patent
1989-08-30
1990-05-08
Raduazo, Henry E.
Static structures (e.g., buildings)
Means compensating earth-transmitted force
Relative motion means between a structure and its foundation
52167CB, E02D 2734
Patent
active
049226673
ABSTRACT:
A rigidity control device is provided to change the natural resonance of an entire building by varying the rigidity of selected structural members such as pillars, beams, braces or floor and pillar, wall and pillar or beam connection members, joints, and the like. The rigidity of a structural member is controlled by restraining or releasing a member from restraint or by applying a controlled force to the member. These processes are selectively combined so that the rigidity of the whole building and each section thereof is controlled by a computer according to earthquake forecast analysis. Thus, the proper rigidity of a building is determined and provided responsive to earthquake detection to prevent the building from destructive resonance caused by earthquake tremors.
REFERENCES:
patent: 4766706 (1988-08-01), Carpe
patent: 4841685 (1989-06-01), Masri
Kamagata Shuichi
Kobori Takuji
Yamada Shunichi
Kajima Corporation
Raduazo Henry E.
Tilberry James H.
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