Application of Steel Tubular Trusses in Large-Span Roofs of High-Speed Railway Stations

Structural Advantages:
Steel tubular trusses achieve large-span coverage through spatial truss systems. For example, Wuhan Station uses a tree-like supporting grid shell composed of semi-arched curved beams and inclined columns, with a single span of up to 36m. Its high axial force characteristics can effectively distribute roof loads. Guangzhou South Station further optimizes the span-to-self-weight ratio through a cable-arch composite structure.

Node Innovation:
Chengdu East Station adopts cast steel hinged joints to release bending moments, transforming the stiffness difference between the truss and the concrete columns into an economic advantage, reducing welding volume and improving installation efficiency. Leiyang West Station solves the construction problem of 48m curved trusses through segmented hoisting technology.

Comprehensive Benefits:
Steel tubular trusses balance architectural aesthetics and functionality. For example, the integrated design of the "bronze mask" columns and structure in East Station reserves space for equipment pipelines while reducing the buildings floor height. Its modular construction also shortens the construction period, adapting to the rapid construction needs of high-speed railway stations.