Steel Box Girder Bridge for Mountainous Roads | 10-300M Spans | AASHTO HL93 Loading Capacity
Price:
1000USD ~ 2000USD Per ton
MOQ:
negotiation
Delivery Time:
negotiation
Brand:
EVERCROSS
Product Description
Steel Box Girder Bridge Structural Design
The steel box girder bridge consists of key structural components including top and bottom plates that bear longitudinal bending stress, web plates that transmit shear forces, and stiffeners that provide local stability. This design ensures structural integrity under complex loading conditions.
Structural Components
- Top & Bottom Plates: Function as firm clamping elements to bear longitudinal bending stress
- Web Plates: Serve as tough partitions to transmit shear forces and maintain structural integrity
- Stiffeners: Act as structural bones to prevent buckling deformation and ensure local stability
- Orthotropic Bridge Panels: Feature vertical and horizontal stiffeners forming orthogonal patterns for optimal load distribution
Bridge Configuration Types
- Single Box Girder: Ideal for bridge widths up to 3 lanes or width-to-span ratios below 1/10
- Double Box Girder: Suitable for wider bridges (4-6 lanes) where single box becomes impractical
- Multi-Box Girder: Optimal for small spans with large bridge widths, ensuring uniform load distribution
Technical Specifications
| Parameter | Specification |
|---|---|
| Design Spans | 10M to 300M single span |
| Carriage Way | Single lane, double lanes, multilane, walkway |
| Loading Capacity | AASHTO HL93, HS15-44, HS20-44, HS25-44, BS5400 HA+20HB, HA+30HB, AS5100 Truck-T44, IRC 70R Class A/B, NATO STANAG MLC80/MLC110 |
| Steel Grades | EN10025 S355JR, S460J0, ASTM A572 GR50/GR65, GB1591 GB355B/C/D/460C |
| Beam Spacing | 1.5m-3m (open rib), 2m-4m (closed rib) |
| Transverse Rib Spacing | Up to 6m with longitudinal beams, maximum 20m without |
Structural Advantages
- High bending resistance with large flange width for long spans
- Excellent torsional stiffness suitable for curved bridges
- Superior transverse flexural strength with reduced need for longitudinal connections
- Lightweight construction with fast installation and easy maintenance
- Hollow box structure facilitates installation of ancillary facilities and maintenance access
Quality Assurance
Factory welding ensures superior weld quality with strict quality control procedures. Regular inspections using visual assessment, ultrasonic thickness gauges, and flaw detectors maintain structural integrity throughout the bridge lifecycle.
Applications
- Highway and road bridges in mountainous regions
- Railway bridges for high-speed rail networks
- Urban infrastructure including overpasses and flyovers
- Pedestrian and cycling bridges
- Long-span river and sea crossings
- Emergency and temporary bridge solutions
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO.,LTD.
Location
ROOM 403,NO.2 BUILDING,NO.269 TONGXIE ROAD,CHANGNING DISTRICT,SHANGHAI,CHINA
Contact Person
Libby Chen