Multistage pendulum type tuned mass damper

摘要

PROBLEM TO BE SOLVED: To provide a multistage pendulum-type tuned mass damper capable of effectively suppressing vertical vibration of a weight with a small number of damper units and without requiring a large stroke.SOLUTION: A multistage pendulum-type tuned mass damper 1 includes: one or more frames 4, 5 arranged coaxially inside an outer frame 3 erected on a structure 2, the frames being suspended sequentially from a top part of the outer frame through a plurality of suspension materials 7; and a weight 6 hung from a top part of the frame 5 on an innermost side through a plurality of suspension materials 8. Vertical rigidity of the plurality of suspension materials 8 that hangs the weight 6 is smaller than the vertical rigidity of the plurality of suspension materials 7 that suspends the frames 4, 5. Furthermore, a damper 9 is provided between the frame 5 and the weight 6, in parallel to the plurality of suspension materials 8.SELECTED DRAWING: Figure 1