دوره 13، شماره 3 - ( 5-1402 )
جلد 13 شماره 3 صفحات 307-289 |
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Mohebbi M, Bakhshinezhad S. OPTIMAL DESIGN OF A SEMI-ACTIVE BRACING MECHANISM. International Journal of Optimization in Civil Engineering 2023; 13 (3) :289-307
URL: http://ijoce.iust.ac.ir/article-1-555-fa.html
URL: http://ijoce.iust.ac.ir/article-1-555-fa.html
OPTIMAL DESIGN OF A SEMI-ACTIVE BRACING MECHANISM. عنوان نشریه. 1402; 13 (3) :289-307
چکیده: (4019 مشاهده)
The semi-active bracing system locks or unlocks the stand-by braces in an on-off mode utilizing a variable stiffness device (VSD). In this paper, the optimal design of a semi-active bracing mechanism and evaluating its performance in mitigating structural vibration under seismic loading have been studied. The optimal stiffness values of the semi-active braces have been determined by solving two optimization problems including minimizing the maximum acceleration and also minimizing the maximum inter-story drift by imposing a constraint on the maximum acceleration. The genetic algorithm (GA) has been applied to solve the optimization problems. To illustrate the design procedure, an eight-story linear shear frame under earthquake record has been considered and the optimal semi-active braces have been designed. In addition, to assess the performance of optimal bracing system under other records which are different from design record in terms of intensity and frequency content, the structure equipped with optimally designed semi-active braces has been tested under several ground motion records. The results show that the optimal semi-active bracing system has simultaneously reduced different responses of the structure although the acceleration reduction has mainly been less compared to the drift reduction.
نوع مطالعه: پژوهشي |
موضوع مقاله:
Optimal design
دریافت: 1402/1/18 | پذیرش: 1402/4/28 | انتشار: 1402/4/28
دریافت: 1402/1/18 | پذیرش: 1402/4/28 | انتشار: 1402/4/28
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