Study on seismic reduction performance of semi-active eddy current pendulum tuned mass damper

被引：0
|
作者：
Wang L. [1 ]
Shi W. [1 ]
Zhou Y. [1 ,2 ]
Zhang Y. [1 ]
机构：
[1] Department of Disaster Mitigation for Structures, Tongji University, Shanghai
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 06期
关键词：
Eddy current damping; Hilbert-Huang transformation (HHT); Linear-quadratic Gaussian (LQG); Seismic reduction performance; Semi-active eddy current pendulum tuned mass damper (SAEC-PTMD);
D O I：
10.14006/j.jzjgxb.2018.C096
中图分类号：
学科分类号：
摘要：
In order to improve the seismic reduction performance of the traditional tuned mass damper (TMD) to building structures, a novel tuned mass damper (TMD) named semi-active eddy current pendulum tuned mass damper (SAEC-PTMD) is proposed in this paper, which can retune its frequency and damping ratio in real time. The structural instantaneous frequency is identified through Hilbert-Huang transformation (HHT), and the pendulum of SAEC-PTMD is adjusted through HHT-based control algorithm. The relationship between effective eddy current damping coefficient and air gap was discussed and fitted, as well as the eddy current damping ratio could be adjusted in real time through adjusting the air gap based on the linear-quadratic-Gaussian (LQG)-based control algorithm. In order to verify the vibration control effect of the SAEC-PTMD, a single degree of freedom primary structure equipped with a SAEC-PTMD excited by earthquake excitations was proposed as a numerical simulation. An optimal passive TMD (PTMD) was used for comparison and the detuning effect was considered, which was caused by the cumulative damage of primary structure. Maximum and root-mean-square (RMS) value of structural acceleration and displacement time history response, structural acceleration and displacement response spectra were used as evaluation indexes to evaluate the improving effect of the SAEC-PTMD to PTMD, both before and after the damage happens to primary structure. The results show that SAEC-PTMD performs better than the optimized PTMD both before and after damage occurs to the primary structure and it has a better seismic reduction effect. © 2019, Editorial Office of Journal of Building Structures. All right reserved.
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页码：184 / 190
页数：6
相关论文
共 14 条
  • [1] Shi W., Wang L., Lu Z., Study on self-adjustable tuned mass damper with variable mass, Structural Control and Health Monitoring, 25, 16, (2017)
  • [2] Sun C., Nagarajaiah S., Study on semi-active tuned mass damper with variable damping and stiffness under seismic excitations, Structural Control and Health Monitoring, 21, 6, pp. 890-906, (2014)
  • [3] Sun W., Li Q., TMD semi-active control based on shape memory alloy, Journal of Harbin Institute of Technology, 41, 6, pp. 164-168, (2009)
  • [4] Tu J., Wang B., The frequency adjustable tuned mass damper based on magnetorheological elastomers, Earthquake Engineering and Engineering Dynamics, 35, 5, pp. 29-34, (2015)
  • [5] Nagarajaiah S., Adaptive passive, semi-active, smart tuned mass dampers: identification and control using empirical mode decomposition, Hilbert transform, and short-term Fourier transform, Structural Control and Health Monitoring, 16, 7-8, pp. 800-841, (2009)
  • [6] Lin G.L., Lin C.C., Chen B.C., Soong T.T., Vibration control performance of tuned mass dampers with resettable variable stiffness, Engineering Structures, 83, 1, pp. 187-197, (2015)
  • [7] Lu X., Zhang Q., Weng D., Et al., Improving performance of a super tall building using a new eddy-current tuned mass damper, Structural Control and Health Monitoring, 24, 1, (2017)
  • [8] Chen Z., Tian J., Huang Z., Et al., Calculation and test correction method of plane type eddy current damping coefficient, China Journal of Highway and Transport, 29, 10, pp. 46-53, (2016)
  • [9] Chen Z., Zhang H., Huang Z., FEM simulation and parameter optimization of a planar eddy current damper, Journal of Vibration and Shock, 35, 18, pp. 123-127, (2016)
  • [10] Chen Z., Huang Z., Tian J., Feasibility study of eddy current tuned mass damper in vibration control of steel-concrete composite floor structures, Journal of Building Structures, 36, pp. 94-99, (2015)
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