Enhanced Seismic Structural Reliability on Reinforced Concrete Buildings by Using Buckling Restrained Braces

The control of vibrations and damage in traditional reinforced concrete (RC) buildings under earthquakes is a difficult task. It requires the use innovative devices to enhance seismic behavior buildings. In this paper, we design RC with buckling restrained braces (BRBs) achieve objective. For aim, three framed structures 3, 6, 9 story levels are designed by using well-known technique nondominated sorting genetic algorithm (NSGA-II) order reduce cost maximize performance. Then, equivalent but including braces. Both structural systems subjected several narrow-band ground motions recorded at soft soil sites Mexico City scaled different intensities terms spectral acceleration first mode vibration structure Sa(T1). incremental dynamic analysis, fragility, reliability maximum interstory drift computed for all selected models BRBs, it concluded that annual rate exceedance considerably reduced when BRBs incorporated. reason, has better comparison good option improve strength hence strong earthquake motions.