Efficiency of Friction Pendulum Bearings in Vertically Irregular Structures Subjected to Various Types of Earthquakes

The attention towards seismic mitigation using passive control systems has increased significantly over the last few decades to reduce earthquake demands and achieve required performance objectives. Nowadays, friction pendulum bearings have proven efficient in mitigating regular RC structures subjected a wide range of earthquakes. Nonetheless, limited studies were dedicated investigating efficiency this type isolation system utilized with various types vertical irregularities. Besides, comprehensive parametric assessments that investigate behavior supported on pulse-like non-pulse-like earthquakes are scarce. Thus, study aims assess frames equipped isolators under different In context paper, three irregularities, known as soft-story, heavy-story, stepped structures, will be modeled investigated. Moreover, outcomes these buildings benchmarked model illustrate selected systems. Furthermore, base-isolated reported. general, results shown exhibited higher values than for responses at periods 2.5 3 damping ratios 15%, 20%, 25%. Doi: 10.28991/CEJ-2022-08-09-05 Full Text: PDF