SHAKING TABLE TEST AND FINITE ELEMENT ANALYSIS FOR BASE-INSULATED BUILDING MODEL WITH DISPLACEMENT CONTROL MATERIAL AND MAGNETS (CONSIDERING MAGNETIZATION AND EDDY CURRENT IN INSULATING LAYER)

Abstract

To reduce the seismic response of small buildings, the authors propose a magnetically levitated foundation insulated from the ground by magnets and supported by a displacement control material. In this study, metal components were used to improve the levitation force and damping characteristics. A static loading test indicated that steel plates on the magnets increased the levitation force. Electromagnetic field analysis showed that a copper plate between the magnets acted as an eddy-current damper and could be represented by a Maxwell material. In addition, the seismic response of a magnetically levitated foundation was discussed based on a shaking table test and structural analysis.