Lrb, Seismic Isolator, Lrb Isolation Bearing manufacturer / supplier in China, offering Lead Rubber Bearing for Bridge and Construction, Rubber Waterstops for All Types of Concrete Joints, Rubber Bentonite Waterstop Strip Water Stop and so on.
|Min. Order / Reference FOB Price||20 Pieces||US $150/ Piece|
|Production Capacity:||10000 Set/Sets Per Month|
|Payment Terms:||L/C, T/T, Western Union, Paypal|
|Certification:||GB, BS, ASTM, ISO,Ce,The Third Party|
|Structure:||Laminated Rubber Bearing|
|Activity:||Multi Direction Movable Bearing|
|Round Size:||Dimension 200-1500mm|
Lead rubber bearing is based on general laminated rubber bearings,pouring the lead into the bearing
center, which is a seismic bearing damping performance improvement of rubber bearings. By changingthe lead core section size of the bearings, lead rubber bearing can change the effective level ofequivalent stiffness and equivalent damping ratio.
|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.Stiff and strong in vertical direction but flexible in horizontal direction.
2.Absorb earthquake-generated force by changing the bearing's shape.
3.Allow the buildings to retain their original shapes and position owing to the high elastic force of rubber.
4.Capable to adjust damping amount just by changing the number of lead plugs.
5.Excellent vertical load capacity ranging from 5 tonf to 2000 tonf.
6.Reduce the ground acceleration by extending the structure vibration period.
7.High durable and elasticity of the rubber part - not suffer any damages during and after earthquake.
8.Easy to install without a separated damper.
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.
Packing & Delivery
sales manager: Ms.nancy Lee