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Selection and Application of Structural Steel Materials for Aircraft Maintenance Hangars​

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 Aircraft maintenance hangars , as the core facilities for aircraft inspection and repair operations, must endure long-term exposure to large-span loads, extreme weather conditions, and complex operational environments. Consequently, stringent requirements are imposed on the strength, weather resistance, and stability of the structural steel materials employed. The judicious selection of suitable steel structural materials not only ensures the hangar's safe operation but also reduces construction and maintenance costs. Based on the functional requirements of different structural components within the hangar, commonly used steel structural materials can be categorised into three main types, each playing a critical role in hangar construction. I. Primary Load-Bearing Structure: The Core Material Supporting the Hangar's ‘Skeleton’ The primary load-bearing structure forms the hangar's ‘skeleton’, bearing the hangar's own weight, aircraft parking loads, and external forces s...

Advantages of bolted ball nodes

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 As welding technology encounters the twin challenges of curved space surfaces and oversized spans, the bolted ball node, with its unique structural intelligence, is reshaping the engineering logic of modern steel buildings . I. the welding technology of the space dilemma   The rigid yoke of geometric constraints In the construction of a shaped roof of an art museum, the complex intersection of double-curvature steel beams made the traditional welding encountered technical bottlenecks. Local deformation caused by heat input so that the 16mm thick plate to produce 0.3mm/mm waviness, even with the segmented welding process, still can not meet the surface accuracy requirements, and ultimately forced to cut and replace 23% of the components.   Spatial Conduction of Residual Stress After welding the 120m span truss of an international exhibition centre, the residual stress triggered an 8cm arching deformation of the overall structure. Although 65% of the stress was removed b...