Parametric optimization and aseismic performance of a TMD system based on power method

被引：0

作者：

Li, Xiang-Xiu ^{[1
]}

Tan, Ping ^{[2
]}

Liu, Liang-Kun ^{[2
]}

Zhang, Ying ^{[2
]}

Yan, Wei-Ming ^{[1
]}

Zhou, Fu-Lin ^{[1
,2
]}

机构：

[1] School of Civil Engineering, Beijing University of Technology, Beijing

[2] Earthquake Engineering Research and Test Center, Guangzhou University, Guangzhou

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2014年 / 33卷 / 17期

关键词：

Damping effect; HHT; Parametric optimization; Power equation; Tuned mass damper (TMD);

D O I：

10.13465/j.cnki.jvs.2014.17.002

中图分类号：

学科分类号：

摘要：

The power balance equation of a structure-TMD system was established. Considering the effects of natural period and damping ratio of the structure, the aseismic effect of the TMD system was investigated with the time history analysis method from the view point of power. The time-frequency diagram of seismic excitation was obtained using HHT transformation, and the reason for the power amplification of a controlled structure compared to an uncontrolled case at some instants was explained. The dissipation power formula of the main structure was derived under harmonic loadings acting on the base of a structure, and the optimal damping ratio and optimal frequency ratio were obtained based on minimization of the dissipation power of the main structure. A comparative analysis was performed with the proposed method and the previous 4 optimization methods. Results indicated that the displacement variance under the random excitation and the energy and power responses under certain ground motions obtained with the proposed method are among those with the four optimization methods, and significantly drop compared with those in the uncontrolled case, so the adaptability and reliability of this optimization method are proved.

引用

页码：6 / 11and17

页数：1111

共 11 条

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