Connecting structure of fabricated concrete-filled steel tubular column body

The invention discloses a connecting structure of a fabricated concrete-filled steel tubular column body. The connecting structure comprises a first steel tubular column section and a second steel tubular column section; the first steel tubular column section is in butt joint with the second steel tubular column section, an inner steel tube is inserted into an inserting groove in a second outer steel tube, and a liner tube is arranged at the connecting position of a first outer steel tube and the second outer steel tube; the first outer steel tube, the second outer steel tube and the liner tube are welded into one through V-shaped groove welding; cementing materials are poured into gap areas in the first outer steel tube and the second outer steel tube, and air in the gap areas is exhausted though exhaust vents; and connecting plates are mounted on a first lug plate and a second lug plate through bolts. The connecting structure has the advantages that the shear-bearing ability of the connecting parts is impro