Rubber Bearing For Bridge is a laminated elastomeric support component installed between the bridge superstructure and substructure. It is designed to safely transfer vertical loads while allowing controlled rotation and horizontal movement caused by traffic, temperature variation, and structural expansion.
The bearing is manufactured by vulcanizing multiple layers of high-quality rubber with embedded steel reinforcing plates. The internal steel plates provide compressive stiffness, while the elastomer layers enable flexibility and deformation control.
This product is widely used in highway bridges, railway bridges, overpasses, and municipal infrastructure projects.
Structural Composition
A typical laminated rubber bearing consists of:
- Top cover rubber layer
- Internal steel reinforcing plates (fully encapsulated)
- Intermediate elastomer layers
- Bottom cover rubber layer
- Optional PTFE sliding layer (for sliding type)
The steel plates are completely bonded within the rubber body to prevent corrosion and ensure long-term structural integrity.
Key Advantages
- Efficient vertical load transfer
- Accommodates beam-end rotation
- Allows horizontal displacement through shear deformation
- Reduces stress concentration on piers and abutments
- Simple structure with long service life
- Low maintenance requirements
The combined steel-rubber laminated structure ensures stable mechanical performance under repeated traffic loading.
Product Types
By Shape
Rectangular Rubber Bearing
Circular Rubber Bearing
By Function
Plain Rubber Bearing
Sliding Rubber Bearing (with PTFE sliding layer for larger displacement capacity)
By Temperature Resistance
CR (Chloroprene Rubber): -25°C to +60°C
NR (Natural Rubber): -40°C to +60°C
Material selection can be customized based on project climate conditions.
Basic Technical Specifications
|
Item |
Specification |
|
Product Name |
Rubber Bearing For Bridge |
|
Structure |
Laminated Steel Reinforced Rubber |
|
Shape Options |
Rectangular / Circular |
|
Sliding Surface |
Optional PTFE Layer |
|
Temperature Range |
-40°C to +60°C |
|
Application |
Bridge Load Transfer & Movement Control |
|
Custom Design |
Available According to Drawings |
Applications
- Highway and expressway bridges
- Railway bridges
- Urban flyovers
- Precast beam bridges
- Infrastructure rehabilitation projects
Customization Service
We provide:
- Custom dimensions according to structural drawings
- Load calculation support
- Climate-adapted rubber compound selection
- PTFE sliding layer thickness customization
- OEM & project-based production
Engineering support is available for infrastructure contractors and project owners.
Why Choose Our Rubber Bearing For Bridge?
- Stable supply capacity for large infrastructure projects
- Competitive factory-direct pricing
- Technical documentation support
- International export experience
- Flexible production for bulk or project-based orders
FAQ
Q: 1. What is the function of a rubber bearing?
A: It transfers vertical loads while allowing rotation and horizontal movement, protecting bridge piers and abutments from excessive stress.
Q: 2. What is the difference between plain and sliding types?
A: Plain bearings absorb movement through rubber shear.
Sliding bearings include a PTFE layer for larger displacement capacity.
Q: 3. Which material should I choose, CR or NR?
A: CR: -25°C to +60°C (normal climate)
NR: -40°C to +60°C (cold regions)
Q: 4. Can you customize according to drawings?
A: Yes. Dimensions, load capacity, and sliding options can all be produced based on project requirements.
Q: 5. What standards do you follow?
A: Manufactured according to GB/T 20688.4-2023 and JT/T 4-2019. Other international standards are available upon request.
Q: 6. What is the typical service life?
A: Normally 20–30 years under proper installation and maintenance conditions.
Q: 7. What information is required for quotation?
A: Bearing type, shape, dimensions, load requirement, and project location.
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