Self-resetting buckling-restrained brace

The invention relates to a self-resetting buckling-restrained brace, and belongs to the technical field of earthquake resistance of building structures. Comprising a buckling-restrained brace and a self-resetting system, the buckling-restrained brace is mainly composed of an inner core and a restraining unit, the self-resetting system is mainly composed of a special-shaped steel pipe, a sleeve, a left end plate, a right end plate, a fixing plate, a resetting rib and a resetting spring, and the buckling-restrained brace is connected into the sleeve of the self-resetting system in a penetrating mode. The self-resetting buckling-restrained brace is scientific in design and reasonable in structure, a resetting system in the self-resetting buckling-restrained brace is formed by connecting the high-strength springs and the prestressed tendons in series, the self-resetting buckling-restrained brace has very excellent resetting performance, and residual strain is effectively and greatly reduced. 本发明为一种自复位防屈曲支撑，属于建筑结构