Steel Girder Bridge Introduction
Here's a clear comparison of steel girder bridge types and their key differences:
Types of Steel Girder Bridges
Key Differences Explained
Load Capacity:
Rolled I-beams: Simplest, for light loads
Plate girders: Customizable for heavy rail/road loads
Box girders: Best for combined bending+torsion (e.g., curved bridges)
Span Capability:
Short (<30m): Rolled beams
Medium (30-100m): Plate/box girders
Long (>100m): Box girders dominate
Fabrication Complexity:
Rolled beams: Ready-to-use
Plate girders: Field welding/bolting required
Box girders: Precision welding of closed sections
Economic Factors:
Rolled beams: Cheapest upfront
Box girders: Higher initial cost but lower life-cycle maintenance
Aerodynamics:
Open I-girders: Prone to wind vibrations
Closed box sections: Better for high-wind areas
Specialized Variants
Variable Depth Girders: Deeper at supports (optimizes material usage)
Launching Nose Girders: Tapered front for incremental construction
Orthotropic Decks: Integrated steel decking (common in box girders)
Selection Guide
Highway Overpass: Plate girder (cost-effective for 40-60m spans)
Mountainous Terrain: Box girder (handles curves and torsion)
Urban Aesthetics: Tub girder (sleek appearance)
Railway Bridge: Heavy plate girder (fatigue-resistant details)
Here's a clear comparison of steel girder bridge types and their key differences:
Types of Steel Girder Bridges
Key Differences Explained
Load Capacity:
Rolled I-beams: Simplest, for light loads
Plate girders: Customizable for heavy rail/road loads
Box girders: Best for combined bending+torsion (e.g., curved bridges)
Span Capability:
Short (<30m): Rolled beams
Medium (30-100m): Plate/box girders
Long (>100m): Box girders dominate
Fabrication Complexity:
Rolled beams: Ready-to-use
Plate girders: Field welding/bolting required
Box girders: Precision welding of closed sections
Economic Factors:
Rolled beams: Cheapest upfront
Box girders: Higher initial cost but lower life-cycle maintenance
Aerodynamics:
Open I-girders: Prone to wind vibrations
Closed box sections: Better for high-wind areas
Specialized Variants
Variable Depth Girders: Deeper at supports (optimizes material usage)
Launching Nose Girders: Tapered front for incremental construction
Orthotropic Decks: Integrated steel decking (common in box girders)
Selection Guide
Highway Overpass: Plate girder (cost-effective for 40-60m spans)
Mountainous Terrain: Box girder (handles curves and torsion)
Urban Aesthetics: Tub girder (sleek appearance)
Railway Bridge: Heavy plate girder (fatigue-resistant details)
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Email: jack@xingyasteel.com
Phone: +86 17305413116
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A: Normally, we ship from Tianjin Port, Qingdao Port and Shanghai Port. Of course, we can also accept the port you specify.