چکیده مقاله
Sensitive equipments as the secondary structures can be isolated from the floor vibrations caused by earthquakes using a proper isolation system In this study the effectiveness of the sliding isolation system that is placed between the floor of the primary structure and the sensitive equipment is investigated under a group of earthquake records In order to find the optimal values of the parameters of sliding isolator, namely: friction coefficient, damping coefficient and stiffness of restoring force device, a fast and elitist non dominated sorting genetic algorithm NSGA II method has been applied The simultaneousminimization of acceleration and displacement of the secondary system are considered as objective functions For the numerical study, the primary structure is considered as a ten story shear frame with one lateral degree of freedom at each story level The isolated equipment is considered at the fifth story of the primary structure Results demonstrate the effectiveness of the considered isolation system in reducing the seismic vibration of the equipment Also results reveal that the NSGA II approach is strongly effective for evaluating the optimal values of parameters of the isolation system
کلیدواژهها
نویسندگان
M Faraji
Department of Civil Engineering, University of Guilan, Rasht, P O Box ۳۷۵۶, Iran
N. Fallah
M Faraji Department of Civil Engineering, University of Guilan, Rasht, P O Box ۳۷۵۶, IranG. Zamiri
G. Zamiri
M Faraji Department of Civil Engineering, University of Guilan, Rasht, P O Box ۳۷۵۶, IranN. Fallah
شیوه ارجاع
Faraji, M and Fallah, N. and Zamiri, G.,1391,Multi-objective Optimization of Seismic Vibration Control of Critical Equipments Isolated with Sliding systems,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان