Seismic response control based on response displacement for a bending-shear model
This paper discusses seismic response control of high-rise building utilizing magnetorheological fluid damper(MR damper).Generally,during earthquake,high-rise buildings show not only shear deflection,which occurs in inter-story must be taken into account,also the flexural deformation that is caused by column elongation must be considered.Some previous researches have proposed of protective systems for such high-rise buildings based on a flexural deformation using some passive viscous dampers set in vertical direction of the building.Our challenges discuss the seismic response control for such high-rise buildings base on the flexural deformation using a variable damper.We discuss numerical simulation for a scaled bending-shear model with one mass system and scaled MR damper model set in vertical directions of the model.On/Off control algorithm that switched by damper response is adopted,and the reduction of response acceleration have been discussed.In the proposed control method,damper force is determined proportionally corresponding to each peak displacement values during seismic response.This scheme based on the modulated homogeneous friction control proposed by previous researchers.The new control algorithm is applied our hysteresis shape control method to this closed-loop system.In this paper,we introduce the proposed control method while show the relation with the structural linear damping.Numerical seismic simulation for a scaled model that has been reported in previous research is discussed to confirm effectiveness of seismic response reduction utilizing new control algorithm.As a result,it is clear that proposed control can reduce the maximum response remarkably.
Seismic response control Bending-shear model Flexural deformation MR damper Rate-independent damping
H.Kanno
Department of Architecture and Environment Systems,Akita Prefectural University,Akita,JAPAN
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
1076-1084
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）