Abstract
A hybrid active dynamic vibration absorber possessing such a structure that it is supported by a passive dynamic vibration absorber is proposed in this paper for high-rise buildings subjected to large earthquake. Furthermore, a hybrid dynamic vibration absorber with a switching mechanism of the parameters of passive supporting part is devised to maintain a certain performance of vibration control in a large earthquake. In the computer simulations using a wave with the maximum acceleration of 200 gal, similar to the E1 Centro earthquake wave, the proposed hybrid active dynamic vibration absorbers were compared to the ordinary passive or active type. As a result, the usefulness of the proposed hybrid active vibration absorber was verified even for a large earthquake.
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