Steel pipe column on-site butt joint positioning device and construction method

The invention discloses a steel pipe column on-site butt joint positioning device and a construction method. The steel pipe column on-site butt joint positioning device comprises a pipe clamp and an adjustable screw rod, wherein the pipe clamp is of a detachable structure, a plurality of connecting lug plates are arranged on the pipe clamp, the adjustable screw rod comprises buckles which are arranged at the two ends and are matched and fixed with the connecting lug plates, connecting rods are fixed to the inner ends of the buckles, and a connecting sleeve which is in threaded fit with the two connecting rods is arranged between the two connecting rods. The positioning device is simple in structure and can be manufactured into a complete device in batches to be reused according to the shape and size of the steel pipe column, compared with a traditional butt joint process, temporary manufacturing is not needed during use, steel is saved, and the construction period is shortened. According to the construction m