Today, Reinforced Concrete Frame with Buckling Restrained Brace (RCF-BRB) are commonly used as lateral resisting systems in seismic areas. Two characteristics of higher energy dissipation capacity and lack of buckling behaviour, has caused that RCF-BRB have a better alternative to conventional bracing. In this study, Seismic Analysis of RCF-BRB at far and near faults is investigated. Comparison of validation of BRB by ABAQUS software with laboratory model indicates acceptable agreement. In this paper, 3- and 5 story reinforced concrete frame with BRB were subjected to 6 earthquake scaled record, and roof displacement, base shear, force-displacement curve, and absorbed energy of the frame and its components were investigated. As well as stresses and plastic strain of frame components and BRB were also evaluated to find the causes of the weakness. The results showed that the far faults record has more destructive effects than the near faults record on the RCF-BRB and it was also found that the effective components in plastic deformation of BRB, are Core, and Gusset plate.
