Node structure and construction method of double-curved-surface large-span steel structure with node structure

The invention belongs to the technical field of building construction, and discloses a joint structure and a construction method of a double-curved-surface large-span steel structure with the joint structure. The joint structure comprises a first joint assembly, the first joint assembly comprises an L-shaped supporting plate and an edge sealing combination, the L-shaped supporting plate comprises a first plate, a second plate and a rib plate which are vertically arranged in pairs, the first plate and the second plate form an L-shaped structure, the second plate and the rib plate are vertically arranged on a steel beam, the first plate abuts against a steel bar truss plate, and the second plate abuts against a steel bar truss plate. The edge sealing combination is connected to the steel beam and surrounds the outer side of the steel bar truss plate. Safe and smooth installation of the steel bar truss plate is guaranteed through the L-shaped supporting plate, efficient and accurate installation of the steel bar