Customization: | Available |
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After-sales Service: | Technical Guidance |
Warranty: | 2 Years After Leaving The Factory |
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High damping rubber bearing (HDR), belongs to seismic isolation bearing. It is composed of special rubber with excellent damping attribute, sandwiched together with layers of steel. Damping is an influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations. Thus, bridge bearing made of high damping rubber has excellent vibration reduction ability. Available with excellent flexibility and high restoring ability, high damping rubber bearing can absorb some input energy of the earthquake before the energy is transmitted to the substructure and can be restored after the earthquake.
Working principle
During earthquake, the vibration from various directions will impact fixed base building and results in deformation and building or bridge damages. The high damping bearing pad is improved through high damping material, which the damping ratio can approach to 15% to 18%.
When the earthquake comes, the high damping rubber bearing will increase the horizontal displacement through rubber shear deformation and reduce friction coefficient. The large displacement can weaken the vibration from all direction and reduce the damage of building and bridges.
Joint structure
Parameter Name | Unit | Specification Range |
Damping Ratio | % | ≥12 |
Load Capacity | kN | As per design requirement |
Vertical Stiffness | kN/m | As per design requirement |
Horizontal Stiffness | kN/m | As per design requirement |
Vertical Compression Deformation | mm | ≤10 |
Horizontal Deformation | mm | ≤30 |
Durability | - | Fatigue life over 20 million cycles |
Temperature Range | ºC | -40 to +70 |