大規模実験モデルによる高層建物制振用アクティブ・パッシブ切換え型マスダンパの研究

概要

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A new type of hybrid mass damper for response control of tall buildings was tested by using large-scale models of the mass damper and a building. The mass damper can work as an active one to effectively control relatively small vibrations of a building caused by winds and weak earthquakes. At the same time, it can work as a passive one against medium and strong earthquakes. The harmonic excitation tests were carred out for a mass damper model with a 5t moving mass supported by an XY-motion mechanism and equipped with a hydraulic actuator in each direction which could change over from a normal actuator to an oil damper in the inverse direction as well. The model was installed on the roof of a 6-story building model of 19m height and 470t weight. The tests showed that the mass damper could achieve a 90% reduction in the 1st-mode response of the building by the active control, and a 60% reduction by the passive control. It was confirmed that the mode switching did not give the building impulsive responses.
社団法人日本機械学会の論文
1993-01-25