副質量を有する建物制振用マスダンパに関する研究 : 第2報, 振動実験による制振性能の検討

概要

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Vibration control techniques, such as TMD and AMD, have been widely introduced into the design of high-rise buildings to reduce vibrations due to wind and earthquakes. Although these systems are capable of attenuating vibrations against low-level input such as wind and weak earthquakes to a fairly perceptible r. m. s. vibration level, they can not function well for destructive earthquakes because these kinds of systems have their own design limitations mainly on the size of the mass utilized on the tops of buildings and on the stroke of the actuators or travel distance of the mass. A new type of multi-tuned mass damper has been developed to reduce the displacement of the primary mass by using impact forces produced by added mass. Accordingly dynamic tests using a shake table were carried out to confirm its performance. The damper was installed at the top of a 5-storey steel-framed building model of 5 400 kg in total mass. Overall mass of the system comprised from primary and added mass was 22. 4 kg and it was equivalent to 0. 47% of the first modal mass of the building. Then computer response analyses were conducted to simulate the performance of the system.
一般社団法人日本機械学会の論文
1996-05-25