The description of isolation bearings The HDR high damping rubber bearing, Its structure is the same as ordinary laminated rubber bearings, high damping rubber bearing is improved through rubber formula, so that the rubber material damping is increased, so that the bearing's damping ratio can reach 15-18%. This series of bearing is suitable for 9 degrees earthquake intensity area of highway and municipal bridge.By improving the formula, so that the rubber material damping is increased, so that the bearing's damping ratio increase, achieve the isolation effect. Features of isolation bearings The trinity of the vertical bearing capacity, level of restoring force and damping (energy absorption) Bearing hysteresis characteristics (load - deformation curve) fully, energy consumption significantly Rubber formula improvement, the equivalent damping ratio can reach more than 12% Low maintenance cost (no other damping device) Little residual deformation after the big earthquake, don't need to replace High damping bearing surface covered with rubber protection cover, which prevents the internal rubber from being affected by ozone, ultraviolet ray, has better aging resistance, 50 years of equivalent damping ratio less than 2% Its low temperature dependency, widely used in different climate regions HDR high damping rubber and natural rubber with superior creep properties Environmental protection,no pollution
Technical parameter
Vertical bearing capacity: 204kN -21206kN |
Design angle: 0.006rad and 0.008rad |
Equivalent damping ratio: >10% |
Bearing displacement: sliding type bearing along the bridge to the design displacement of two kinds of 100mm and 150mm, the transverse bridge to the design displacement is + 30mm; fixed type normal design shear strain is 1, the earthquake is 2 |
Friction coefficient: friction coefficient of sliding bearing design is 0.03 |
Applicable temperature range: -40C -60C |
Design principle Vertical bearing capacity: Through the stiffened plate to provide a stable and reliable vertical bearing capacity, to ensure the safety and reliability of the daily use of the building. Horizontal stress: Using natural rubber with high strength, and bonding steel plate relay which is reliable, horizontal direction are subjected to daily vibration, wind load and earthquake when huge vibration shock wave, to ensure that the buildings do not because of the sudden internal damage caused the failure of. Theoretical foundation of seismic isolation design: The special damping formulation performance consumption in seismic transmission level of the vibration energy, in the earthquake, vertical provides support to the building and the horizontal direction will not will all the energy transferred to buildings, in seismic wave reciprocating action will vibration energy is converted into heat quantity consumed, greatly reduce the structure under the horizontal earthquake force wave of bad effect, thus reducing the earthquake on building capacity for destruction. As your request, the high damping rubber bearing can be manufactured in rectangular or round shapes. Custom sizes and designs are also welcomed.
Technical parameter 
