Circular shear pin type cast-in-place beam triangular cantilever bracket

The utility model discloses a triangular cantilever bracket of a circular shear pin type cast-in-place beam. The triangular cantilever bracket comprises an anchoring plate, a cross beam, an oblique beam, a shear pin, deformed steel bars, an embedded pipe and a base plate, the embedded pipe is fixed on a steel reinforcement framework in the bridge pier to be embedded before pouring; the anchor plates are divided into a plurality of groups, each group comprises a pair of anchor plates which correspond to each other up and down, the shear pins are inserted into the anchor plates and the embedded pipes, the deformed steel bars are inserted into the shear pins and the embedded pipes, the base plate is arranged at one ends of the deformed steel bars, and the anchor plates are fixed and locked by matching nuts with the deformed steel bars; one end of the cross beam is fixedly connected with the top anchoring plate, one end of the oblique beam is fixedly connected with the bottom anchoring plate, and the other end of