Buckling - restrained braces are effective energy - dissipating and shock - absorbing components. They are axial - force - bearing components that can achieve full - cross - section yield under both tension and compression. Compared with traditional brace components, they have more stable mechanical properties. When the BRB is under pressure, it exhibits the same hysteretic behavior and excellent energy - dissipation capacity. This characteristic endows it with a dual - structure function. It can not only provide the necessary lateral stiffness but also add damping to the structure, reducing the structural vibration response under rare seismic actions.
