Lead rubber bearing applied to building and bridge constructions, is a practical and cost-effective choice for seismic isolation.
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| The composition of the lead bearing |
Laminated rubber bearing
The rubber in the isolator acts as a spring. It is very soft laterally but very stiff vertically. The high vertical stiffness is achieved by having thin layers of rubber
reinforced by steel shims. These two characteristics allow the isolator to move laterally with relatively low stiffness yet carry significant axial load due to their high vertical stiffness. The lead core provides
reinforced by steel shims. These two characteristics allow the isolator to move laterally with relatively low stiffness yet carry significant axial load due to their high vertical stiffness. The lead core provides
damping by deforming plastically when the isolator moves laterally in an earthquake.
Size Range
Sliding isolators have been made from 12 to 41 inches in diameter.
Sliding isolators have been made from 12 to 41 inches in diameter.
| Rubber block | Laminated rubber bearing (LRB) | Comparison of compressive and horizontal shear features |
|---|---|---|
 |  |  |
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Special Characteristics of Dacheng Rubber Co.,ltd.
- Cover rubber
- the outer cover protects rubber laminations against ultraviolet rays and ozone exposure that deteriorate rubber.
- Bonding
- through a proprietary surface treatment prior to vulcanization, the individual rubber layers and steel shim plates are permanently bonded together between the upper and lower flanges.
Principle of Laminated Rubber Bearing
A standard rubber block can be easily compressed and sheared because of its biaxial softness. A laminated rubber bearing can be easily sheared, but its high vertical stiffness allows it to support a heavy structure such as a building.
Email:allison@zqdcrubber.com
allisondacheng@hotmail.com
Skype:allisondacheng
Tel:86-318-8538202
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