Steel beam structural member for maintenance of hollow slab bridge

The invention relates to a steel beam structural member for hollow slab bridge maintenance, which comprises a left web and a right web, the two webs are fixedly connected through a transverse connecting plate and a lower connecting piece, a steel bar connecting structure is arranged at the upper parts of the two webs and is used for connecting steel bars of a middle cast-in-place pavement layer, and a bottom-holding connecting structure is arranged at the bottom of the left web and/or the right web and is used for connecting the steel bars of the middle cast-in-place pavement layer. And the bottom support is used for fixedly connecting the bottom support connecting plate so as to block concrete on the corresponding side. When in use, the steel beam structural member is put into a to-be-replaced position, and grouting is performed in the interval seam formed by the steel beam structural member and the hollow plate beam on the corresponding side to form the hinge seam, so that the steel beam structure and the h