Abstract
Seismic control of cable-stayed bridges is of paramount importance due to their complex dynamic behavior, high flexibility, and low structural damping. In the present study, several semi-active Fuzzy Control Algorithms (FCAs) for vibration mitigation of Lali Cable-Stayed Bridge are devised. To demonstrate the efficiency of the algorithms, a comprehensive nonlinear 3-D model of the bridge is created using OpenSees. An efficient method for connecting MATLAB and OpenSees is devised for applying FCAs to the structural model of the bridge. Two innovative fuzzy rule-bases are introduced. A total of six different fuzzy rule-bases are utilized. The efficiency of the FCAs is evaluated in a comparative manner. The performance of fuzzy control systems is also compared with a sky-hook and a passive-on system. Moreover, the sensitivity of efficiency of control systems to the peak ground acceleration is evaluated qualitatively. In addition, the effect of time lag is also investigated. This study thoroughly examines the efficiency of the FCAs in different aspects. Therefore, the results can be regarded as a general guide to design semi-active fuzzy control systems for vibration mitigation of cable-stayed bridges.
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Acknowledgements
Invaluable support of Bolandpayeh Company for providing the model of Lali Bridge in SAP2000 is gratefully appreciated. The assistance of Mrs. N. Zangeneh and Mr. M. Kamali-Zarch in preparing technical information about Lali Bridge is acknowledged. The kind cooperation of Mr. R. Zamanian for applying TCP IP network connection is also appreciated.
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Javadinasab Hormozabad, S., Ghorbani-Tanha, A.K. Semi-active fuzzy control of Lali Cable-Stayed Bridge using MR dampers under seismic excitation. Front. Struct. Civ. Eng. 14, 706–721 (2020). https://doi.org/10.1007/s11709-020-0612-9
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DOI: https://doi.org/10.1007/s11709-020-0612-9