Application of Tubular Trusses in Stadiums

Application of Tubular Trusses in Stadiums
Tubular trusses, with their lightweight and high-strength characteristics, have become the preferred solution for stadium canopy structures. For example, the Beijing Olympic Sports Center uses a tension-compression tubular truss to balance the cantilevered self-weight. Their unidirectional load transfer characteristics (roof load → main truss → vertical members) can optimize stress efficiency. The spacing between main trusses is usually 1/3.5 to 1/5 of the span.

Design Considerations and Case Studies
Large stadiums (such as the Birds Nest) use spatial staggered tubular trusses to achieve complex shapes, combining mechanical performance and artistic expression. During design, it is necessary to control the span-to-depth ratio of the main truss (recommended ≤20m) and add secondary trusses or edge trusses to enhance out-of-plane stability.