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According to the layout characteristics of the roof steel truss structure system, the construction technology of "hydraulic synchronous push and slip" is proposed to adopt the installation method of bidirectional rotation and cumulative slip.
To construct a single-layer grid shell system that meets structural safety requirements, multiple factors must be considered. When designing a single-layer grid shell based on the petal profile, the cross-sectional dimensions of the members must be relatively large to ensure structural safety. This is due to the significant reaction forces at the supports of the grid shell, which necessitate additional reinforcement of the main structure. To address this, vertical struts are added below the petal beam nodes to act as supports, which reduces the span of the main beams and thereby decreases the cross-sectional dimensions of the grid shell components.
The Hangar No. 1 at the new Beijing Daxing International Airport, operated by China Southern Airlines, is the largest maintenance hangar in Asia. The construction of this hangar utilized advanced technologies, processes, and materials, while also emphasizing environmental sustainability. Given the roof's considerable height, large span, and minimal slope, the hangar's roofing system required enhanced performance in waterproofing, fire resistance, insulation, and wind uplift resistance.
Guangzhou Comprehensive Stadium is composed of comprehensive hall, gymnastics hall, history museum and skywalk gallery, with a total construction area of about 52126m. The main body of the comprehensive stadium is cast-in-place reinforced concrete frame structure, and the roof system adopts space combination steel structure truss, the maximum span of space combination truss is 99m.
The upper and lower chords of the quadrangular cone grid are square (or rectangular near square) grid, staggered by half a grid, so that the corner of the lower chord grid is aligned with the upper chord grid of the form of the centre, and then in the upper and lower chords of the nodes are connected with the web, that is, the formation of the quadrangular cone system grid.
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