Pierre’s research focuses on improving the seismic performance of steel structures, specifically the behavior of buckling-restrained braced frames (BRBFs). His work aims at reducing large residual interstory drifts observed in these frames after major earthquakes. To achieve this goal, the potential incorporation of multiple core materials inside buckling-restrained braces (BRBs) is investigated, in order to enhance the post-yield lateral stiffness of steel structures. Through numerical simulations carried out on various geometric configurations, the capacity of these improved BRBs to sustain large inelastic deformations will be evaluated. The expected results of this study will allow the engineering design of more efficient steel braced frames in Canada.