Connecting structure for fabricated building

The utility model provides a connecting structure for a fabricated building, and particularly relates to the field of buildings. The utility model relates to a reinforcing steel bar pipe which comprises a pipe body provided with a cavity penetrating through the pipe body, the end of a reinforcing steel bar is located in the cavity, the pipe body is connected with a feeding end and a discharging end, and the feeding end and the discharging end are communicated with the cavity. The two sets of sealing assemblies are located at the ends of the pipe body; the sealing assembly comprises a plurality of sealing gaskets, arc-shaped grooves are formed in the sealing gaskets, and the sealing gaskets are located on the peripheries of the steel bars; the adjusting assembly is connected with the discharging end and comprises a limiting block, a thrust spring and a sliding block, and the limiting block is fixedly connected with the discharging end; wherein a cavity is formed in the discharging end, the sliding block is loc