Experiment on Conformation and Seismic Performance of Buckling-restrained Brace Made of Composed Hot-rolled Angle Steel

A new conformation type of buckling-restrained brace suitable to Chinese market is developed. The brace is made of hot-rolled angle steel, and called BRAB for shortly. Four specimens, including quasi-cross and T section, are designed and manufactured. Cyclically loading tests are conducted. Seismic performances, such as force-deformation loops, tangent stiffness and its deterioration, as well as equivalent damping ratio are studied. It is proved that the BRAB has a reliable conformation with high energy dissipation and excellent seismic behaviors.