MRダンパを設置した小型3層免震フレームのセミアクティブ振動制御実験

概要

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The purpose of this study is to find out a proper algorithm for semi-active seismic response control of base-isolated building. In the study, in order to perform hundreds of shaking table test, a scaled base-isolated three-story steel frame with a miniature capacity adjustable damper is used. In the first part, mechanical properties of the miniature bypass type magneto-rheological fluid damper are studied based on a series of the sinusoidal displacement tests results. The Bingham model was found to be quite effective to simulate the mechanical properties of the MR damper. In the second part, several passive/semi-active control algorithms are studied, among which, both tne response feed-forward control algorithm and the fuzzy control algorithm are found to be better than the other semi-active ones and the passive ones. It is also confirmed that test results compare with prior analytical ones fairly well.
2007-07-30