Overhead butt joint auxiliary device of box-shaped steel columns

The utility model relates to an overhead butt joint auxiliary device of box-shaped steel columns. The overhead butt joint auxiliary device comprises a base and lug plates and is characterized in that the base is of a hoop-shaped structure capable of being sleeved on the box-shaped steel columns and being in slide fit with the box-shaped steel column, the shape of the cross section of the base is identical to that of the cross section of the box-shaped steel column, a group of opposite sides of the base are supporting sides, the two lug plates are symmetrically arranged on the supporting sides, are fixed on the supporting sides and are vertical to the base, the thicknesses of the lug plates are 16-22mm, the widths of the lug plates are 100-180mm, the heights of the lug plates are 300-400mm, at least two circular holes are formed in the lug plates, and the diameters of the circular holes are 18-26mm. The overhead butt joint auxiliary device provided by the utility model is simple in structure, low in cost and c