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《Journal of Building Structures》 2010-S2
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MTMD wind-induced vibration control of Beijing Olympic Center Broadcast Tower based on its simplified model

HUANG Ruixin1,2,LI Aiqun2,ZHANG Zhiqiang2(1.School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212003,China;2.School of Civil Engineering,Southeast University,Nanjing 210096,China)  
In the paper,Beijing Olympic Center Broadcast Tower is taken as a project case to investigate wind-induced vibration control with multiple tuned mass damper(MTMD) under the fluctuation load.First of all,based on the random vibration theory,fluctuating wind load of this tower is simulated by means of Shinozuka method,and 6 correlated time history curves are obtained.Secondly,by use of finite element software-SAP2000,a 3D finite element model of the tower is created and modal analysis of the tower is performed.Thirdly,the 3D model of the Tower is simplified to a 2D model.Employing the simulated wind load curves,the calculated results of the 2D model coincide with the results of the 3D model,thus the accuracy and reliability of the 2D model is verified,and the calculation time is greatly reduced.Finally,utilizing these curves,the vibration control of the tower is studied and the optimal MTMD coefficients are obtained regarding the wind-included responses of upper story as optimization objectives.The analysis results show that the maximum peak acceleration response of the tower under dynamic wind load is far beyond the allowable value of the code,the wind-included responses are decreased greatly with MTMD,and the peak acceleration and displacement wind-responses of the upper story are reduced respectively by 29.5% and 45.7% with the optimal parameters of MTMD.MTMD dissipates a large amount of input energy and plays an important pole in the wind-induced vibration of the tower.
【Fund】: 国家“十一五”科技支撑计划项目(2006BAJ03A04)
【CateGory Index】: TU392.6
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