High Damping Bearings are laminated seismic isolation bearings manufactured by vulcanizing high-damping rubber layers with internal steel reinforcement plates.
Compared with standard elastomeric bridge bearings, high damping rubber bearings provide both structural support and seismic energy dissipation. The special high-damping rubber material significantly increases the damping ratio, allowing the bearing to absorb and dissipate earthquake energy, thereby reducing structural vibration and improving overall bridge safety.
These bearings maintain the excellent mechanical properties of conventional laminated rubber bearings while providing enhanced seismic isolation performance.
High damping seismic isolation bearings are widely used in highway bridges, railway bridges, and urban infrastructure located in seismic regions.
Design Standards
GB 20688.2-2006 - Elastomeric Bearings Part 2: Seismic Isolation Bearings
JT/T 842-2012 - High Damping Seismic Isolation Rubber Bearings for Highway Bridges
Other international standards can be supported based on project requirements.
Product Types
HDR (I) – Fixed High Damping Bearing
- Horizontal movement achieved through rubber shear deformation
- Provides strong seismic energy dissipation
- Suitable for structures requiring high horizontal force resistance
HDR (II) – Sliding High Damping Bearing
- Equipped with PTFE sliding surface
- Allows larger displacement capacity
- Reduces friction during structural movement
Both types can be designed according to bridge structure requirements.
Basic Technical Specifications
|
Item |
Description |
|
Product Name |
High Damping Bearings |
|
Structure |
Laminated Rubber with Steel Plates |
|
Rubber Type |
High Damping Rubber |
|
Product Types |
HDR(I) Fixed / HDR(II) Sliding |
|
Function |
Seismic Isolation & Energy Dissipation |
|
Shape |
Circular / Rectangular |
|
Application |
Bridge Seismic Protection |
|
Custom Design |
Available |
Key Advantages
- Excellent seismic energy absorption capability
- High damping ratio improves vibration reduction performance
- Stable vertical load capacity
- Large horizontal deformation capacity
- Reliable long-term mechanical performance
- Suitable for bridges in seismic regions
- Long service life with minimal maintenance
Typical Applications
- Highway bridges
- Railway bridges
- Urban overpasses
- Municipal infrastructure
- Bridges in earthquake-prone areas
About Us
Jiangsu Yangzhou Heli Rubber Products Co., Ltd.
Founded in 1964, we specialize in the manufacturing of engineered rubber products used in bridge structures and hydraulic infrastructure.
With decades of experience in rubber vulcanization technology and structural rubber product manufacturing, we provide reliable rubber bearing solutions for infrastructure projects worldwide.
Our products are widely used in bridge construction, water conservancy projects, and transportation infrastructure, supporting long-term structural stability and safety.
FAQ
Q: What is the main advantage of high damping bearings?
A: They can absorb seismic energy and reduce vibration during earthquakes.
Q: What is the difference between HDR(I) and HDR(II)?
A: HDR(I) is a fixed type bearing, while HDR(II) includes a sliding surface for larger displacement.
Q: Can the bearing be customized for different bridge projects?
A: Yes, size, load capacity, and configuration can be designed according to project drawings.
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