Core Differences Among Three Types of Bearings
| Type | Damping Source | Self-Centering Capacity | Cost | Application Scenarios |
|---|---|---|---|---|
| LRB Lead Rubber Bearing | Plastic energy dissipation of lead core | Strong | Medium | Hospitals, schools, residential buildings, conventional bridges |
| LNR Natural Rubber Bearing | Rubber inherent damping | Extremely strong | Low | Light loads, low damping demand, large displacement required |
| HDRB High-Damping Rubber Bearing | High-damping rubber formulation | Medium | High | Projects with high environmental requirements and lead-free demand |
Unique Advantages of LRB
- Integrated design: Combines seismic isolation and damping in one unit, no additional dampers required.
- High initial stiffness: Resists wind and micro-vibration, stable under daily service with no noticeable sway.
- Stable mechanical performance: Bilinear hysteretic curve, standardized and reliable design.
- Simple maintenance: Maintenance-free, long service life.
Selection Recommendations
- Priority LRB:Moderate-to-high seismic intensity regions, public buildings, conventional bridges.
- Choose LNR:Long-span suspension bridges, light-load industrial buildings.
- Choose HDRB:Environmentally sensitive areas, projects with lead-free requirements.