Buckling-restrained energy-dissipated brace of carbon fiber reinforced cold-formed thin-wall square steel pipe

The invention discloses a buckling-restrained energy-dissipated brace of a carbon fiber reinforced cold-formed thin-wall square steel pipe, which achieves the purpose of ensuring tight fitting between encased carbon fiber reinforced cloth and the square steel pipe on the conditions that an encased steel pipe of a buckling-restrained mechanism adopts the cross section of the cold-formed thin-wall square steel pipe, and four corners of the cold-formed thin-wall square steel pipe are designed to be circular-arc. The square steel pipe is filled with carbon nanofiber concrete, the modified concrete can greatly improve the deformability of the whole buckling-restrained energy-dissipated brace, and the energy-dissipated shock absorbing effect is good; two layers of carbon fiber cloth are adopted between the cold-formed thin-wall square steel pipe and a restraint produced by three layers of carbon fiber reinforced cloth through wrapping to perform local reinforcement on the four corners; the number of the layers of externally-wrapped carbon fiber reinforced cloth is three, each layer of carbon fiber reinforced material is glued with organic glue, and the gluing quality is ensured by a strict manufacturing technique; and connectors of the buckling-restrained energy-dissipated brace can be of an articulated or fixedly connected type and are arranged at the ends of the two sides of the brace, thereby realizing a connection between a bracing member and a combination frame structure.