SHAKING TABLE TEST OF SMALL SCALE BUILDING MODEL WITH OIL DAMPER FOR VERIFICATION OF EARTHQUAKE RESPONSE MAGNIFICATION PHENOMENON CAUSED BY FRACTURE OF DAMPER ATTACHMENT MEMBER

Abstract

Shaking table tests of small scale building model with oil damper are performed in order to verify an earthquake response magnification phenomenon caused by fracture of damper attachment member during earthquake motion. Fracture of damper attachment member is simulated by means of detachable steel block which links a oil damper with a floor plate. The steel block is detached from the floor plate at any timing by switching on an electro magnet. It is shown that the characteristics of earthquake response magnification ratios which are observed in the shaking table tests correspond well to those which are simulated by numerical analysis.