Auxiliary device for verticality adjustment of steel pipe column in reverse construction

The utility model discloses a reverse construction steel pipe column verticality adjusting auxiliary device which comprises an auxiliary steel pipe, the auxiliary steel pipe is formed by welding an upper section of main steel pipe and a lower section of connecting steel pipe through a stiffening steel plate, the diameter of the main steel pipe is larger than that of the connecting steel pipe, and an auxiliary steel pipe flange plate is welded to the lower end of the connecting steel pipe. Stiffening ribs are welded among the stiffening steel plate, the auxiliary steel pipe flange plate and the connecting steel pipe, a steel pipe column flange plate is welded at the upper end of the steel pipe column, the auxiliary steel pipe flange plate and the steel pipe column flange plate are connected and fixed through a fixing bolt, a flat gasket, a spring gasket and a hexagon nut, and plain concrete is poured in the main steel pipe. According to the utility model, the problem that the perpendicularity of the steel pipe