Modular Bridge Expansion Joint
The GQF-MZL type Modular Expansion Joint assembly consists of edge beams, center beams, cross beams, a movement control system, sealing rubber strips, and an anchoring system (anchor plates and anchor bars). Its distinctive feature lies in the separation of the load-bearing structure and the movement control system, which function independently without mutual interference. This clear division of roles ensures both structural safety and precise displacement control. The design comprehensively accounts for horizontal movement as well as deformations caused by transverse, vertical, and beam-end rotational displacements, making it highly adaptable for curved, sloped, skewed, and wide bridges. This series of Modular Expansion Joints is suitable for use in bridges requiring displacement capacities ranging from 80mm to 2000mm.
Modular Bridge Expansion Joint | GQF-MZL Type for Highway & Railway Bridges
1. Product Overview
GQF‑MZL type Modular Bridge Expansion Joint is a high-performance bridge deck displacement control system, composed of edge beams, center beams, cross beams, and a precision linkage control system. It ensures stable, synchronous movement under temperature changes, vehicle loads, and seismic activity, making it ideal for large-displacement and long-span bridge projects worldwide.
2. Technical Specifications
| Parameter | Details |
|---|---|
| Model | GQF-MZL (Modular Type) |
| Expansion Range | 80mm – 1200mm (customizable) |
| Steel Grade | Q355B / ASTM A572 Grade 50 (optional) |
| Sealing Strip Material | EPDM / Nitrile Rubber |
| Sliding Plate Material | Stainless Steel 304 / 316 (optional) |
| Design Life | ≥ 30 years |
| Applicable Temperature | -40°C ~ +60°C |
| Standards Compliance | JT/T 327-2016, AASHTO LRFD, EN 1337-4 |
| Surface Treatment | Shot blasting + epoxy primer / hot-dip galvanizing (anti-corrosion) |
Sectional Parameters of Modular Expansion Joint Steel Beam
3. Key Features & Advantages
- Modular Design: Flexible configuration to match any bridge expansion capacity, easy installation and maintenance.
- Synchronous Movement Control: Linkage system ensures uniform displacement of all modules, preventing uneven stress and component damage.
- High Load-Bearing Capacity: Robust steel structure supports heavy vehicle loads, compliant with Class A and B traffic load standards.
- Durable Sealing System: EPDM/nitrile rubber strips resist aging, oil, and UV, effectively preventing water and debris intrusion.
- Low Long-Term Maintenance Cost: Wear-resistant components and modular replacement design reduce operation and repair expenses.
4. Applications
Our Modular Bridge Expansion Joints are widely used in:
- Highway and expressway bridges
- High-speed railway and standard railway bridges
- Urban overpasses and viaducts
- Long-span cable-stayed and suspension bridges
- Bridge reconstruction and expansion projects
5. Why Choose Hebei Guchen as Your Modular Bridge Expansion Joint Manufacturer?
- Professional Manufacturer: 15+ years of experience in engineering rubber and bridge expansion joint production.
- Full Customization Capability: Tailor-made solutions for specific bridge types, expansion ranges, and load requirements, including custom design per technical drawings.
- Strict Quality Assurance: ISO 9001 certified, 100% factory inspection before shipment.
- Competitive Factory Pricing: Direct factory supply eliminates middleman costs, offering cost-effective solutions for global projects.
- Global Technical Support: Export to over 30 countries, with on-site installation guidance and after-sales service.
6. Model Selection & Installation Drawings (160mm–1200mm)
Contact us today for a free quote and professional solution for your modular bridge expansion joint project!