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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.
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LEAD RUBBER BEARING,IN THE MIDDLE OF TESTING.
PACKAGED AND DELIVERY
OUR LEAD RUBBER BEARINGS ON EXHIBITION
Bridge bearings and expansion joint are important parts of whole bridge components, but the amount money that spent on bridge bearing and expansion joint is only 2-3.5%, it is absolutely a wise choice to evaluate it within the whole project to prevent failed choice bringing unnecessary costs.
The types of isolation bearings
1.According to the Isolation property points
(1)Ordinary rubber isolation bearing Ordinary rubber bearing is vulcanized by multi-layer rubber sheet and steel sheet, and then glue them together; Product specification 100 mm-800mm in diameter, bearing is capacity of dozens of tons to one thousand tons, have large shear deformation ability.
(2)Lead rubber bearings The lead rubber bearing is vulcanized by multi-layer rubber sheet and steel sheet and glue them together,then pour lead into center hole; Product specification 200 mm -1200 mm in diameter, bearing capacity of dozens of tons to one thousand tons, has large shear deformation ability and yield.
(3)High-performance isolation bearings High-performance isolation bearing is composed of excellent performance isolation components; Product specification is 200 mm -1200 mm in diameter, bearing capacity of dozens of tons to one thousand tons, has largeshear deformationability and yield.High-performance isolation bearing technology is not only excellent performance, but also has simple structure, low cost, easy to changeafter installation.
(4)Three-dimensional isolation bearing Three-dimensional isolation bearings with horizontal and vertical shock absorption ability of isolation components, set the level of isolation and vertical shock (vibration) is an organic whole; Product specifications 200 mm - 1500 mm in diameter, level has larger shear deformation ability and the yield strength, vertical has bigger bearing capacity and stability.Three-dimensional isolation bearingscan vertically isolate earthquake, also can isolate the subwayand various kinds of vibration caused by machine, which is suitable for isolation areas, the rail transit construction, high precision instrument production workshop and a variety of valuable instrument and equipment protection of cultural relics.
2.According to the vibration territory point
(1)Floating vibration isolation track/board support Floating vibration isolation track/board support is composed of rubber damping bearing or steel spring damping bearing and viscous coupling wall-beam, its basic principle is set the damping bearing between rail/plate and foundation, this product has good shock absorption performance, suitable for railway, light rail and underground rail suspension; All kinds of mechanical vibration isolation
(2)Cultural relics isolation box Cultural relics isolation box is composed of core shock/vibration base and housing, has a good vibration damping/ability, apply toearthquake action and external environment vibrationexcitation of the protection of cultural relics.
(3)vibration isolation platform Vibration isolation platform has core energy shock/vibration bearing, has a good ability to reduce shock/vibration, used for all kinds of high precision equipment instrument, banking system, network system, and other important data protection, prevent earthquake and vibration causing damage to the environment.
(4)Bridge isolation bearing Bridge isolation bearing is very stiff in nature, however, during earthquake, it becomes very flexible in horizontal direction so that they can reduce the earthquake force upon the bridges by changing its own shape. Most of all, it can spring back to its original shape after earthquake owing to highelastomeric property.
The advantage of isolation bearings
1.The trinity of the vertical bearing capacity, level of restoring force and damping (energyabsorption) 2.Bearing hysteresis characteristics (load -deformation curve) fully, energy consumption significantly 3.Rubber formula improvement, the equivalent damping ratio can reach more than 12% 4.Low maintenance cost (no other damping device) 5.Little residual deformation after the big earthquake, don't need to replace 6.High damping bearing surface covered with rubber protection cover, which prevents the internalrubberfrombeing affected by ozone, ultraviolet ray, has better aging resistance, 50 years of equivalent damping ratio less than 2% 7.Its low temperature dependency, widely used in different climate regions 8.HDR high damping rubber and natural rubber with superior creep properties 9.Environmental protection,no pollution
As your request, the high damping rubber bearing can be manufactured in rectangular or round shapes. Custom sizes and designs are also welcomed.
What is the good successful case of the isolation bearing
A:In fact, as early as the mid-1990-s, building isolation rubber bearing showed its excellent isolationperformance. The region of an earthquake, Osaka and kobe, Japan is the real one. On January 17, 1995, Japan kobea 7.2 -magnitude earthquake,caused the shocking heavy losses. In the earthquake, 35 kilometers from the epicenter of the west of the men in the post office base isolation technology has played a very good isolationdamping effect, it is in the field of earthquake hazard level has reached the degree of 7 (equivalent to China's earthquake intensity of 9~10 degrees), in the earthquake and after the earthquake, the whole building is as usual.