چکیده مقاله
The seismic performance of isolated structures depends on the properties of base isolation devices like lead rubber bearings LRB Determining the optimal LRB parameters to achieve favorable seismic behavior involves solving optimization problems To address uncertainties arising from variations in geometrical and mechanical parameters of the structures, reliability analysis is essential in the design process This study employs two strategies for the optimal design of LRB: metaheuristic based and reliability based design optimization RBDO In the RBDO method, a double loop approach combining meta heuristic algorithms and reliability analysis is used, with a constraint according to the target reliability index To analyze isolated structures, a nonlinear time history dynamic analysis method is employed, while the LRB isolator's nonlinear behavior is simulated using a bilinear hysteresis model Mechanical properties of the LRB are considered as design variables Through sensitivity and reliability analysis, the study assesses the impact of uncertainties and their significance in determining the system's reliability The results highlight that the strategy of RBDO effectively designs LRB with a remarkable performance in reducing seismic responses
کلیدواژهها
نویسندگان
Ayoub Farajollahi
Department of Structural Engineering Eng , Faculty of Civil Engineering, Tabriz, Iran
Saeed Farajollahi
Ayoub Farajollahi Department of Structural Engineering Eng., Faculty of Civil Engineering, Tabriz, Iran
شیوه ارجاع
Farajollahi, Ayoub and Farajollahi, Saeed,1404,Optimally Robust Reliability-Based Design of Base Isolation Control System in Nonlinear Structures Considering Uncertainties,The 1st National Conference on Resilient Cities, Structures, and Materials (RCSM1),bonab
ارائهشده در
مجموعه مقالات اولین کنفرانس ملی شهرها، سازه ها و مصالح تاب آور23 مهر 1404 · بناب