Analytical study on response reduction effect by tuned mass damper with amplifier mechanism
This paper proposes a Tuned Mass Damper with Amplifier Mechanism(TMD-AM)to reduce displacements during large ground motions.This device is known to not only reduce displacements effectively but also avoid increase in acceleration responses.However,to make effective use of this device because of its mechanism,an installation place is technically limited to the lower story of a building structure,such as the isolation layer of the base isolation structure.In this research,the authors propose a method to install this TMD-AM at a higher place by utilizing coupled-buildings to improve usability of fixed base buildings.The response reduction effect of the TMD-AM was analytically evaluated through comparative studies of the installation of the conventional TMD or of regular coupled-buildings controlled using oil dampers.An analytical study was conducted to compare the response reduction effect of the TMDAM with that of the coupled-buildings connected by a hydraulic damper.The results showed that it was possible to tune the combination of the mass ratio of M1/M2 and frequency ratio of the two buildings; this can reduce the response displacement and floor response acceleration better than the coupled-buildings connected by the hydraulic damper.Next,the TMD-AM was applied to a multiple mass system,and the response reduction effect was compared with that of the coupled-buildings connected by the hydraulic damper in some floors.The response displacement by the TMD-AM was reduced by almost the same amount as that of the coupled-buildings,and the floor response acceleration was reduced more than that of the coupled-buildings.Furthermore,the TMD-AM was installed by constructing only the roof.Thus,the TMDAM could reduce the earthquake response through a simple construction.
Tuned mass damper Inertia mass damper Amplifier mechanism
J.Maruo H.Fujitani Y.Mukai M.Ito
Institute of Construction Technology,Toda Corporation,Tsukuba,Japan Development of Architecture,Kobe University Organization of Advanced Science and Technology,Kobe University
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
381-391
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）