The interior of large buildings does not need any frame or beam column support, and the span can reach 110 meters, do you believe it? Do you believe that the dead weight per square meter does not exceed 3 kilograms? Do you believe that the construction on site will not exceed one week? But these are the real data of air film building.

Air-film building, also known as "air supported structure", is a building structure system that uses special building membrane materials as the building shell, and is equipped with a set of intelligent operation control system to provide air pressure for the completely closed air-film building interior, so that the overall building interior always maintains positive pressure to the external environment, thus supporting the main body of the building by the internal and external pressure difference.

Maybe you are unfamiliar with it, but its development time is not short.

As early as 1917, the Englishman William Lanchester proposed air-supported tents for field operations and applied for a patent, but it did not become a reality due to the technical conditions and production capacity at that time.

Until 1946, Walter Bird of the United States built a gas-supported membrane dome at the Canadian "Duer" radar station in the Arctic Ocean. The gas film material is nylon fiber cloth, which is used for the radar dome of the United States military. Then the United States built a gas film tennis stadium in New York in 1963.

Up to now, nearly 20000 air membranes have been widely used in tennis courts, badminton halls, swimming halls, golf practice halls, indoor football courts, ice hockey halls and multi-function sports venues and other sports facilities around the world. It is also used in industries, mining, construction, military and warehousing.

From the perspective of region, we can see the air film building from Alaska in the north to Florida in the south. At present, the foreign film building market is in a mature market stage. Compared with the mature foreign market, the development time of the film building in China is relatively short, and the relevant government departments have no detailed building specifications for the film building industry. At present, there are only relevant industrial autonomy rules and qualifications issued by the Space Structure Association under the China Steel Structure Association to standardize industrial management.