Seismic Isolation, Hdr, Base Isolation manufacturer / supplier in China, offering High Damping Rubber Bearing for Building and Bridge Base, Rubber Waterstops for All Types of Concrete Joints, Rubber Bentonite Waterstop Strip Water Stop and so on.
|Min. Order / Reference FOB Price||1 Piece||US $1-50/ Piece|
|Production Capacity:||10000 Pieces Per Month|
|Payment Terms:||L/C, T/T, Western Union|
|Certification:||GB, BS, ASTM, ISO, Ce, SGS|
|Usage:||Beam Bridge, Highway Bridge, Railroad Bridge, Building Base Isolation Construction|
|Structure:||Laminated Rubber Bearing|
|Material:||Chloroprene, Natural Rubber, Steel Plates|
|Activity:||Multi Direction Movable Bearing|
|Shape:||Rectangular and Round, Spherical|
High damping rubber bearing, also known as HDR, has very similar appearance to lead rubber bearings, but they are totally different in nature. High damping rubber bearing is composed of special rubber with excellent damping attribute, sandwiched together with layers of steel without any lead plugs.We adopt the best rubber material of high damping ability, which enable it to absorb large energy of earthquake, taking advantage of its high elasticity, friction damping and viscosity damping characteristics as well as high durability.
Excellent seismic isolation properties
A high damping rubber 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 building or bridges by changing its own shape. Most of all, it can spring back to its original shape after earthquake owing to high elastomeric property.
1. Put vertical bearing capacity, horizontal restoring force and damping (energy absorbing) these three characteristics into one ;
2. The hysteretic characteristic (load-deformation curve)of the bearing is plumper and the energy consumption is significant;
3. Rubber formula improving and equivalent damping ratio can reach more than 12%;
4. Low maintenance and management costs (no need of other damping devices);
5. Residual deformation is minimal after earthquake and do not need replacement;
6. The surface of high damping bearing is covered with rubber protective layer, which can protect the inner rubber from ozone and ultraviolet rays, and has better aging resistance. And decrease amplitude of equivalent damping ratio is less than 2% in 50 years;
7.HDR high damping rubber has low temperature dependence.And it can be widely used in different climatic regions;
8.HDR high damping rubber has superior creep properties as natural rubber;
9. Environmental and non-pollution.
Vertical bearing capacity: 204kN - 21206kN
Design angle: 0.006rad and 0.008rad
Equivalent damping ratio: >10%
The displacement of the bearing: the design displacement of sliding bearing in bridge axial direction is ±100mm and ± 150mm.
The horizontal displacement of the bridge is ±30mm, and the normal shearing strain is 1.0, and the scale of earthquake is about 2.0.
Friction coefficient :the design friction coefficient of sliding bearing is 0.03.
Applicable temperature range: -40ºC-60`ºC
1. The energy absorption capacity of lead damper
Rubber is a kind of easy pull, press and deformation material. The bearing made only by rubber will deform greatly after loading .Engineering rubber bearing is composed of multilayer thin steel plate and overlay thin rubber. Steel plate has excellent binding effect on rubber vertical deformation for its high vertical compression rigidity. LRB bearing has low tensile rigidity, which is about 1/7 ~ 1/10 of compression rigidity.
2.The horizontal deformation capacity of LBR bearing
The steel plate can restrain the vertical deformation of rubber but has no effect on its horizontal deformation. At the same time, the lead can follow well of the deformation of bearing and absorb the seismic energy. The LRB bearing has stable horizontal property. Due to the existence of lead in LR bearing, it can limit the horizontal deformation of bearing.
3. Durability of LRB bearing
Shock insulation rubble even after 100 years of use, it still can keep its inner rubber intact. After 10 years of use, the properties of LRB bearing are almost unchanged.
Package & Delivery
Packaging Detail: packing inwovenbag and on pallet or according to the customes' requirements.
Delivery Detail: within 15 days after receiving the deposit
Contact : Ms.nancy Lee
Heng Shui Kang Qiao Rubber Co.,Ltd