Application of Steel Tubular Trusses in Airports

Structural Advantages and Design Features
Steel tubular trusses, utilizing steel pipe members and cast steel nodes, are characterized by their novel design, lightweight, and high strength, making them suitable for large-span, column-free spaces in airports. For example, the Stuttgart Airport terminal in Germany uses a tree-branch support structure to achieve a unity of architectural aesthetics and functionality. The inverted triangular tubular truss design can effectively distribute loads and improve seismic performance.

Key Construction Techniques
Large-scale tubular trusses often employ segmented prefabrication and on-site assembly processes, using CNC cutting to ensure node accuracy. Temporary support frames and wind cables are required during aerial docking to control docking errors ≤ L/1000 (where L is the span). For example, a basketball stadium project used a 200t crane for in-span hoisting, precisely docking two halves of the truss.

Typical Cases and Value
The tubular truss roof of Japans Kansai International Airport remained intact during a magnitude 7.2 earthquake, verifying its seismic reliability. The Shenzhen Baoan Stadium in China uses an 80,000㎡ cantilevered tubular truss, demonstrating the potential for large-span spatial applications. This type of structure can meet the dual requirements of airports waiting halls and terminals for clear height and aesthetics.