Beijing Capital International Airport-Airport Struture

It is a 4F-level international airport, one of the three major portal complex hubs in China, a member of the international air cargo hub group in the Bohai Rim region, and the world's super-large airport. Yuantai Derun Group supplies structural tubes for the project.

The entire terminal steel structure consists of two parts: the core area and the corridor:

The roof of the core area of the terminal building is composed of six relatively complete and stable force-bearing systems to form an organic whole. The total amount of steel used is about 40,000 tons, and the maximum height difference is about 30 meters. The roof steel structure has a projected area of 180,000 square meters, but only uses 8 C-shaped columns as main supports and 12 tower columns. The distance between C-shaped columns is 200 meters. The entire core area roof is assembled from 63,450 rods and 12,300 ball nodes.

The steel grid of the corridor is an irregular free-form surface, using a hybrid structure of trusses and grids. The total projected area is about 133,000 square meters; the maximum span is 41.6 meters, and the maximum height difference of the grid is about 5 meters. The steel structure rods adopt round steel tube sections and square steel tube sections. The nodes are intersecting nodes or welded balls, and the connections are complex. The five corridor roof steel grids are assembled from a total of 8,472 welded balls and 55,267 rods.