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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...

Bolted Spherical Grid Structures in the Design of Large-Span Roof Structures

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 Large-span roof structures play a significant role in modern architecture, particularly in sports venues, exhibition centres, and industrial plants. Bolted spherical grid structures, as an efficient spatial grid structure, have gained widespread application in large-span roof projects due to their lightweight design, high load-bearing capacity, and ease of construction. I. Structural design features of bolted ball grid structures Bolted ball grid structures consist of ball nodes and members connected by bolts to form a three-dimensional spatial load-bearing system. Their structural design features the following characteristics:   Lightweight and high load-bearing capacity: The members of bolted ball grid structures are typically made of steel pipes or round bars with small cross-sectional dimensions, resulting in a lightweight overall structure. However, through reasonable member arrangement and node design, they can withstand significant loads. Convenient construction: The ...