Volume 15, Issue 2 (4-2025)
IJOCE 2025, 15(2): 221-240 |
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Kamgar R, Ahmadi A, Ghale Sefidi A. OPTIMIZATION OF THE PARAMETERS OF THE TRIPLE FRICTION PENDULUM BEARING SYSTEMS FOR A THREE-DIMENSIONAL FRAME WITH NONLINEAR BEHAVIOUR. IJOCE 2025; 15 (2) :221-240
URL: http://ijoce.iust.ac.ir/article-1-632-en.html
URL: http://ijoce.iust.ac.ir/article-1-632-en.html
1- Department of Civil Engineering, Shahrekord University, Shahrekord, Iran
Abstract: (368 Views)
This paper utilized the multi-objective cuckoo search (mocs) optimization algorithm to compute the optimum parameters of three-dimensional frame structures controlled by the triple friction pendulum bearing (TFPB) systems. For this purpose, firstly, the maximum capacity of the unisolated structure (uncontrolled structures) is evaluated for six main earthquakes using an incremental dynamic analysis (IDA). Then, the structure is controlled using the TFPB systems and excited using the maximum acceleration calculated from the previous step to calculate the optimal parameters of the TFPB system (i.e., the coefficients of friction and effective radius of curvature) subjected to some constraints in such a way that the maximum local drift ratio and also the Park-Ang damage index ratio minimized. Finally, to evaluate the behavior of the controlled structure, it is excited by main shock-aftershock earthquakes under sequence IDA. The results showed an average seismic improvement of 30% and 40% for the controlled structures according to the Park-Ang damage and drift indices, respectively.
Keywords: Triple friction pendulum bearings, Moment frame, Park-ang damage index, Optimization, Drift ratio
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