Self-resetting slope friction energy dissipation type support

The utility model relates to a self-resetting slope friction energy consumption type support, which belongs to the technical field of earthquake resistance of civil engineering and comprises a cylindrical barrel and two core columns which are arranged in the cylindrical barrel and are matched with the cylindrical barrel for use. The adjacent fan-shaped cover plates are in contact and are fixedly connected through a plurality of bolt connecting pieces made of superelastic SMA materials, the bolt connecting pieces and the fan-shaped cover plates are matched to form hoop pre-tightening force, the two core columns and the axis of the cylindrical barrel are arranged in a head-to-head mode, a cavity is reserved between the heads, continuous wedge-shaped protrusions are arranged in the middle of each core column in the circumferential direction, and the wedge-shaped protrusions are arranged in the middle of the cylindrical barrel. During work, relative displacement is generated between the core column and the cylind