BASE-ISOLATED STRUCTURE OF BUILDING

• Main Authors: SAWADA KENJI, MIHASHI KOJI, OGINO NOBUYUKI
• Format: Patent
• Language: English
• Published: 08.06.2006
• Subjects: BLASTING; BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; CEILINGS; ENGINEERING ELEMENTS AND UNITS; FENCING; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSULATION OR OTHER PROTECTION OF BUILDINGS; LIGHTING; MASTS; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; ROOFS; SHOCK-ABSORBERS; SPRINGS; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL; THERMAL INSULATION IN GENERAL; WALLS, e.g. PARTITIONS; WEAPONS

PROBLEM TO BE SOLVED: To solve the following problems that a rubber produces a void in the action of a great tensile force on the rubber of an base-isolating rubber device, and ruptures when the rubber is greatly deformed, in the case where a conventional base-isolated layer using the base-isolating rubber device and a sliding bearing device is applied to a so-called slender building with an aspect ratio (towering ratio) of 5 or more. SOLUTION: In this base-isolated structure of the building 1, the base-isolated layer comprises the base-isolating rubber device 2, the elastic sliding bearing device 3, and a fluidic system damper gear (oil damper gear 4). A control mechanism 8 sets the fluidic system damper gear in a locked or unlocked state, makes the fluidic system damper gear operate, while having such a property as to gradually increase a damping force along with an increase in the response speed of the base-isolated layer, in the unlocked state, and makes the fluidic system damper gear operate, while having such a property as to gradually increase the damping force, in proportion to an increase in the response speed of the base-isolated layer after the damping force greater than in the unlocked state is generated when the response speed of the base-isolated layer is set at approximate 0, in the locked state. COPYRIGHT: (C)2006,JPO&NCIPI