Some knowledge about aircraft hangar

Aircraft hangar, referred to as hangar, is a large-span single-story building for maintenance of aircraft, which is the main building of the aircraft maintenance area. According to the amount of aircraft maintenance and maintenance of different project requirements, the hangar layout, building height, structural form also varies, mainly depends on the following factors:

1.At the same time, the type and number of aircraft maintenance, maintenance items and the degree of maintenance need to be repaired.

2.Hangar structural height and layout requirements and limitations.

3.Hangar doors and hangars, cranes, work platforms, setup requirements.

4.Inside and outside the hangar fire fighting facilities configuration requirements.

5.Site conditions and development trends. Configuration requirements of fire fighting facilities inside and outside the hangar.

Structural form 　

The layout and height requirements of the hangar are special, which directly affect the structure form of the hangar. Due to the large span of the hangar, the self-weight of the structure (mainly referring to the roof system) accounts for a large proportion of the total load, so if the self-weight of the structure can be reduced, it can obtain obvious economic effects. Steel structure has the advantages of high strength, light weight, small cross-section, weldability, simple manufacturing process, etc. Therefore, it is more common to use steel structure as the roof load-bearing system in large-span structure, such as Beijing Capital International Airport Hangar. The space structure system has good stress and light weight, which can solve the problems that cannot be solved by certain plane structure system. Shell structure, space frame structure, suspension structure and other space structure have been widely used as roofing system for large-span buildings. For example, the hangar roof of London Airport adopts flat plate grid structure with two-way diagonal intersecting diagonal cross-trusses, with the plan size of 170.15×83.62 meters, which consists of prefabricated tubular trusses. Steel for high-strength steel, yield strength of 450 MPa, the entire roof is supported on 8 columns, in addition to the general load on the roof, but also to withstand the weight of 700 tons of equipment. Federal Republic of Germany Frankfurt airport hangar roof using suspended slab with structure, plane size 270 × 100 meters, divided into two spans. Each span consists of 10 strips of 135 meters long and 7 meters wide.

Hangar space is large, often more than one aircraft in the library for maintenance. All kinds of maintenance equipment and appliances and work platforms are accompanied by oil, gas, electricity and other flammable and explosive sources, fire prevention, explosion-proof should have strict requirements and perfect facilities. At present, high-multiplicity foam fire extinguishing system is mostly used.