نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه خوارزمی، کرج، ایران
2 دانشجوی کارشناسی ارشد مهندسی زلزله، گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه خوارزمی، کرج، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, the optimal design of a tuned mass damper (TMD) considering soil–structure interaction (SSI) is investigated. To this end, the objective function is formulated based on minimizing the H∞ norm of the roof-displacement transfer function in the frequency domain. The TMD parameters are optimized utilizing Opposition-Switching Search (OSS). It is a powerful metaheuristic algorithm that applies opposition-based learning in its particular steps to effectively seek the design space for global optimum. After obtaining the optimal parameters, seismic performance of the controlled structure is evaluated both in the frequency do-main and under a set of far-field and near-field earthquake records in the time domain. Consequently, significant reduction in the seismic responses of structure was observed in each case due to the proposed control by the optimized TMD. Furthermore, the controlled system exhibits better performance under far-field ground motions. In addition, comparison between the rigid, stiff, and soft soil conditions shows that soil flexibility has a remarkable influence on both the optimal parameters and the performance of the TMD. These findings highlight the importance of simultaneous consideration of SSI effects and optimal TMD design in achieving efficient seismic control.
کلیدواژهها [English]
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