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http://dx.doi.org/10.12989/was.2015.20.3.363

Optimization of multiple tuned mass dampers for large-span roof structures subjected to wind loads  

Zhou, Xuanyi (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University)
Lin, Yongjian (China Southern Airlines Company Limited Basic Construction Management Division)
Gu, Ming (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University)
Publication Information
Wind and Structures / v.20, no.3, 2015 , pp. 363-388 More about this Journal
Abstract
For controlling the vibration of specific building structure with large span, a practical method for the design of MTMD was developed according to the characteristics of structures subjected to wind loads. Based on the model of analyzing wind-induced response of large-span structure with MTMD, the optimization method of multiple tuned mass dampers for large-span roof structures subjected to wind loads was established, in which the applicable requirements for strength and fatigue life of TMD spring were considered. According to the method, the controlled modes and placements of TMDs in MTMD were determined through the quantitative analysis on modal contribution to the wind-induced dynamic response of structure. To explore the characteristics of MTMD, the parametric analysis on the effects of mass ratio, damping ratio, central tuning frequency ratio and frequency range of MTMD, was performed in the study. Then the parameters of MTMD were optimized through genetic algorithm and the optimized MTMD showed good dynamic characteristics. The robustness of the optimized MTMD was also investigated.
Keywords
large-span roof; MTMD; mode contribution; optimum analysis; genetic algorithm; constrain conditions; TMD spring;
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Times Cited By KSCI : 2  (Citation Analysis)
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