Shear connecting piece of steel-concrete composite beam bridge

The utility model provides a shear connector of a steel-concrete composite beam bridge, which comprises a supporting steel plate, a plurality of stud bodies are arranged at the top of the supporting steel plate, a sealing groove is arranged at the top of the supporting steel plate, a threaded hole is arranged at the bottom of the sealing groove, the stud bodies are in threaded connection with the threaded hole in a matched mode, and a first sealing ring is arranged in the sealing groove. A second sealing ring is fixedly arranged at the position, above the external thread part and close to the external thread part, of the stud body in a sleeving mode, and the second sealing ring is arranged in the first sealing ring in a sealed mode. According to the stud, the second sealing ring and the first sealing ring are extruded and deformed to achieve the effect of sealing the threaded hole, the stud body is effectively prevented from being affected with damp and corroded, the shear resistance and rigidity of a shear c