BUILDING EQUIPPED WITH VIBRATION CONTROL DEVICE FOR WIND

• Main Authors: TACHIBANA EIZABURO, SHIMIZU KINYA, MUKAI YOICHI, TAMURA TAMOTSU, TOKUHIRO YOSHIHIDE, FURUKAWA TADATOSHI
• Format: Patent
• Language: English
• Published: 20.02.1996
• Edition: 6
• Subjects: BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; FENCING; FIXED CONSTRUCTIONS; MASTS; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL

PURPOSE:To use small energy in controlling the horizontal vibration of a building caused by wind by using a control portion in controlling the rotation of a movable vane installed at the uppermost story of a building, and varying the face area of the movable vane in the direction of the wind according to signals from sensors. CONSTITUTION:States such as the direction and speed of the wind and vibrations are input to a control portion 4 from sensors such as an anemoscope and an anemometer 9 at the uppermost story of a building 1 and a speed-type seismograph 10 on a predetermined story. The control portion 4 calculates the rotation angle of a movable vane 3 as to the direction of rotation on the basis of the quantities of those states so that the movable vane 3 has the appropriate face area in the direction of the wind. A servo motor is rotated to rotate the movable vane 3 in the direction in which vibration control for the building 1 is most expected. Thus when the building 1 vibrates in the direction of action of the wind, the movable vane 3 is rotated in a direction perpendicular to the wind to maximize the force of wind pressure. Alternatively, the movable vane 3 is rotated parallel to the wind to increase or reduce the wind pressure force to control vibrations generated in the building 1. Therefore, vibrations generated in the building 1 in the direction of action of the wind can be reduced by use of the wind.