ORIGIN RETURN DEVICE FOR VIBRATION-ISOLATED STRUCTURE BUILDING

Japanese Patent JP3810670

B2

PROBLEM TO BE SOLVED: To provide an origin return device accurately correcting the displacement of the place of a building at a low cost when the place of the building supported through a vibration isolation layer having hysteretic characteristics is displaced by an earthquake or the like.
SOLUTION: The origin return device is composed of a displacement detector 4 detecting the place to the origin of the building, hydraulic cylinders 11 displacing the building to a ground, an on-off valve 13 changing over the supply or discharge of oil pressure to or from the hydraulic cylinders 11, a controller 5 setting a place at a nearer distance from the origin than the current place of the building at the aimed place of the building and setting a command value corresponding to the aimed place and a servo amplifier 3 outputting a time proportional to the magnitude of a deflection between the command value and the current place of the building and signals driving the hydraulic cylinders 11 in the direction that the deflection is reduced.

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JP7071802	How to adjust the seismic shelter installation structure

Mitsuhiro Kawamura
Kazutoshi Takahisa
Hidenori Katayama
Nobuyoshi Hanyuda
Uchiyama Yoshihide
Murai Nobuyoshi
Masashi Yamamoto

JP2001354095A

August 16, 2006

November 20, 2001

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Kayaba System Machinery Co., Ltd.
TAKENAKA CORPORATION

E04H9/02; F15B11/02; F16F15/04; G05D3/00; G05D3/12; (IPC1-7): E04H9/02; F15B11/02; F16F15/04; G05D3/00; G05D3/12

JP2000257666A
JP2001123703A
JP7048923A
JP4055576A
JP2000192901A

Masaki Goto
Yoshio Matsuda

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