Elastomeric Rubber Bridge Bearings 350x450mm with 1496kN Load Capacity for Thermal Expansion Control
Elastomeric rubber bearings are essential components in modern bridge engineering, positioned between the bridge superstructure and substructure to accommodate controlled movement and flexibility. These bearings effectively manage thermal expansion, seismic activity, and other structural movements through their curved design and rotational capabilities.
| Item | Plane Size la×lb(mm) | Max Bearing Pressure Rck(kN) | Total Thickness t(mm) | Max Displacement (mm) | Allowable Corner Tangent Value tan θ |
|---|---|---|---|---|---|
| 1 | 350×400 | 1326 | 69 | 22 (Δt1) / 30.8 (Δt2) | 0.0081 (Warm) / 0.0069 (Cold) / 0.0058 (Coldest) |
| 2 | 350×450 | 1496 | 69 | 22 (Δt1) / 30.8 (Δt2) | 0.0074 (Warm) / 0.0064 (Cold) / 0.0053 (Coldest) |
| 3 | 400×400 | 1251 | 69 | 22 (Δt1) / 30.8 (Δt2) | 0.0063 (Warm) / 0.0054 (Cold) / 0.005 (Coldest) |
| 4 | 400×450 | 1716 | 69 | 22 (Δt1) / 30.8 (Δt2) | 0.0057 (Warm) / 0.005 (Cold) |
| 5 | 450×450 | 1936 | 69 | 22 (Δt1) / 30.8 (Δt2) | 0.005 (Warm) |
- Rubber material crushing or cutting resistance
- Compression and shear deformation limits within allowable usage
- Support structure integrity against horizontal shear forces
Types: Round board type, Rectangular plate type
Application Scope: Suitable for bridges with spans less than 30 meters and minimal displacement. Different shapes accommodate various bridge configurations: rectangular for orthobridges; curved, diagonal, and cylindrical for different pier types.
Regular inspection and maintenance ensure optimal performance. Key maintenance activities include:
- Cleaning sewage, grease, and water from piers and caps
- Removing silt or dried silicone grease from PTFE slide contact surfaces
- Applying new silicone grease as needed
- Clearing debris, snow, and ice around bearings
- Accommodating thermal expansion and contraction
- Supporting vertical loads up to 1936 kN
- Providing flexibility through neoprene or natural rubber construction
- Enabling custom configurations for specific bridge requirements
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.