Development and Shake Table Test of the Semi-active Control Base-isolation System for Building Structure

Development and Shake Table Test of the Semi-active Control Base-isolation System for Building Structure

In this study, the shaking table test of semi-active controlled base-isolation system is presented. The full-scaled one-story building structure is used as the upper structure in the shaking table test. The semi-active controlled base-isolation system combined the rolling pendulum system and one Magneto-rheological damper. The rolling pendulum system provide the suitable restoring forces, while the semi-active controlled MR damper provide the online adjusted damper force. The Fuzzy-Logic control is used to calculate the optimal command voltage to the MR damper. Eight different earthquake excitations with several PGA levels are tested. The shaking table test result shows that the semi-active controlled base-isolation system can isolated the ground acceleration input with limited stroke of the isolation system. Also, it is stable and adaptive to different intensity of excitation.