Steel Grid Structure

Steel Grid Structure

Pre Engineered Buildings

Steel grid structures are lightweight, high-strength spatial frameworks composed of interconnected steel members forming a two-way or three-way grid pattern. They provide exceptional span capabilities (50m to 200m+) with minimal supports, making them ideal for large-area coverage in stadiums, airports, and exhibition halls.

Types of Steel Grid Structures
By Grid Pattern

Type  Description  Best For
Two-Way Grid  Members intersect at 90° (square/rectangular) Roofs, floor decks
 
Three-Way Grid  Triangular pattern (higher torsional stiffness)  Domes, complex geometries
Space Frame  3D truss-like structure (double-layer grid)  Long-span roofs, arenas
Cable Grid  Tensioned cables + steel members 

Lightweight tensile structures

 By Connection Method

  • Bolted Sphere Nodes – Prefabricated spherical joints (MERO system).
  • Welded Nodes – Higher strength, custom designs.
  • Threaded Connectors – Adjustable assembly (Unistrut-type systems).

Key Components

  • Grid Members – Circular/rectangular hollow sections (CHS/RHS).
  • Nodes – Spherical, welded, or bolted connection points.
  • Support System – Fixed, hinged, or sliding bearings.
  • Cladding – Glass, polycarbonate, or metal panels.

Advantages of Steel Grid Structures

  • Ultra-Long Spans (50–200m+) – Minimal columns needed.
  • Lightweight – 30–50% lighter than conventional steel frames.
  • Architectural Freedom – Curved, domed, or free-form shapes possible.
  • Fast Construction – Prefabricated modules for quick assembly.
  • Seismic Resistance – Excellent load distribution.

Common Applications

  • Stadiums & Arenas – Roof structures (e.g., Olympic stadiums).
  • Airports – Terminal roofs (e.g., Beijing Daxing Airport).
  • Exhibition Centers – Column-free spaces.
  • Atriums & Skylights – Glass-covered grid shells.

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