Dynamic Optimum Performance of Buckling Restrained Braces in Multi-storey Building using FEA

Civil Engineering structures are subjected to enormous cyclic forces during a seismic event. Steel bracings are the common type which mainly used to resist the lateral loading acting during a seismic activity. The conventional bracing system fails due to the degradation of brace strength under compression that occurs due to the buckling of the brace. Hence, Buckling Restrained Brace (BRB) were invented in the 80's, which have the ability to yield in tension and compression without buckling, thus obtaining a stable hysteresis loop. This study deals with the Non-linear cyclic analysis of all-steel BRBs with different models and a comparative study with concrete filled BRB and all-steel BRB using ANSYS Workbench 16.1. Nonlinear time history responses of the multi-storey buildings with all steel BRB and conventional brace were also assessed in this study using ETABS. The case study results shows the effectiveness of Buckling Restrained Braces with different geometries and also indicates the performance of BRB in different geometries and also indicates the performance of BRB in different storey buildings.