Spatial Layout Advantages of Steel Tubular Trusses in Multi-Modal Transportation Hubs

Spatial Layout Flexibility:
Steel tubular trusses adapt to the complex flow requirements of multi-modal transportation hubs through modular combinations. For example, Beijing Fengtai Railway Station uses bi-directional intersecting steel tubular trusses to achieve seamless connection between the subway and high-speed rail. Its three-dimensional stress characteristics can resolve multi-directional load conflicts. The hollow structure of the truss facilitates the integration of mechanical and electrical pipelines, increasing the net height utilization rate by more than 30% compared to traditional frames.

Structural Efficiency Optimization:
The lightweight nature of steel tubular trusses (reducing weight by 60% compared to concrete structures) lowers foundation loads, making them particularly suitable for multi-story transfer scenarios on soft soil foundations. The Shanghai Hongqiao Transportation Hub case shows that by adjusting the curvature and member density of the trusses, it is possible to simultaneously meet the differentiated load-bearing requirements of large-span waiting halls and dense transfer corridors.