Study on Seismic Behavior of Buckling Restrained Braced Steel Frame Structure

Through elastic response spectrum analysis as well as elastic-plastic time-history analysis by inputting a strong ground motion record,story drift and displacement are compared among different steel frame structures using BRBs, a frame using conventional braces and a non-braces frame.The comparisons show that the story drift and displacement of the frame using BRBs are smaller that those of the other two frames.Conclusions are drawn that the use of BRBs can enhance the structure's ductility,dissipate the energy effectively,and reduce the nonlinear demand of the columns and girders.