Novel sleeve-type fabricated joint of square steel tube column and H-shaped steel girder and construction method of novel sleeve-type fabricated joint

The invention provides a novel sleeve-type fabricated joint of a square steel tube column and an H-shaped steel girder and a construction method of the novel sleeve-type fabricated joint. The novel sleeve-type fabricated joint comprises a joint area square steel tube column section, a joint area H-shaped steel girder section and a connecting piece. The connecting piece comprises a square sleeve, an H-shaped sleeve and a supporting steel plate, the square sleeve and the square steel tube column are connected through high-strength bolts, the situation that the column wall is too thin, and thus local protrusion occurs to the positions, where the bolts are located, of the square steel tube column is effectively prevented, and thus the bearing force of bolted connecting positions of the columnand the girder is increased; the H-shaped sleeve and the square sleeve are connected in a welded mode, the welding area is increased compared with a conventional mode, and thus the joint is firmer andsafer; the supporting ste