According to big residual deformation of normal buckling-restrained brace,a new brace called self-centering triple-steel tube buckling-restrained brace(SCBRB)is put forward to control residual deformation and its specific constitution is given.To study its mechanical properties,we study the hunt-wound working principle of SCBRB through overall analysis,analyzes the working mechanism of self-centering system(SC),and compare the working principles between BRB with I-shaped core and BRB with tubular core.The r...