Abstract
A new tupe tuned-mass-damper, which is designed to reduce the response of main structures against not only weak earthquakes / wind but also destructive earthquakes, has been investigated. The basic construction of this system is obtained by dividing a TMD mass into two parts. The impact forces which are generated by the upper mass and stopper, reduce the displacement of the lower mass. Until the previous report, it was confirmed that the performance of the vibration control system was almost the same as that of an optimal TMD although the maximum amplitude of lower mass is markedly reduced to about a half of the TMD mass. In this report, we applied an active control into this system (for weak earthquakes) using an existing building model and confirmed the change rule, and investigated the performance of IHMD in comparison with an optimal TMD.
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