Hangar roofs typically employ steel structures or spatial structure systems. The China Southern Airlines hangar at Beijing Daxing International Airport uses a combined structure of "gate truss + W-shaped inclined truss + straight truss + double-layer space frame," with the steel roof utilizing modular hoisting and two-stage synchronous lifting technology.
During construction of the Shandong Airlines maintenance project at Xiamen Xiang'an International Airport, finite element software simulation analysis and multiple expert consultations were conducted. A "ground assembly + overall lifting" process was adopted, utilizing 23 CNC hydraulic hoists to achieve precise synchronous control, lifting the 7283-square-meter, approximately 900-ton steel space frame roof to the design elevation of 25 meters with a fine-tuning accuracy within ±2.5 millimeters. BIM technology was widely applied during construction for 3D collaborative design, construction simulation, and clash detection, and a BIM collaborative management platform was used to achieve model sharing and "BIM electronic template guidance." The No. 1 hangar at the Xiamen Taikoo Xiang'an Airport maintenance base adopted a "ground assembly + overall lifting" process. Using 54 hydraulic units working in tandem through a control system, the steel structure roof, weighing 11,393 tons and with a maximum single span of 269.5 meters, was lifted 27 meters to the design elevation of 42.5 meters and was successfully joined in April 2024.
