The aircraft hangar, referred to as the hangar, is a large-span single-story building for maintaining aircraft and is the main building in the aircraft maintenance area. Steel structure has the advantages of high strength, light weight, small cross section, weldability and simple manufacturing process, so it is more common to use steel structure as roof bearing system in large span structure, and the space structure system has good force and light weight, which can solve some problems that cannot be solved by plane structure system.