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Heng Shui Kang Qiao Rubber Co., Ltd.

Seismic Isolator, Lrb, Lrb Isolation Bearing manufacturer / supplier in China, offering Qualified Base Isolator Lead Rubber Bearing for Construction, Swellable Waterbars with Competitive Price, Hydrophilic Swelling Bentonite Waterstop for Concrete Joint and so on.

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Supplier Homepage Product seismic isolator Qualified Base Isolator Lead Rubber Bearing for Construction

Qualified Base Isolator Lead Rubber Bearing for Construction

FOB Price: US $220-350 / Piece
Min. Order: 10 Pieces
Min. Order FOB Price
10 Pieces US $220-350/ Piece
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Port: Tianjin, China
Production Capacity: 100000PCS/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: KQ-011
  • Usage: Earthquake Resistance
  • Model Number: Dimension 200-1200mm
  • Application: Earthquake Resistance
  • Trademark: KANGQIAO
  • Specification: As Customer′s Drawing
  • HS Code: 40082900
  • Certification: ISO9001:2000
  • Material: Cr/Nr
  • Forming Way: Rubber Layers with Internal Steel Plates
  • Material Properties: Cr and Nr
  • Transport Package: in Pallets or Wooeden Cases
  • Origin: China
Product Description

Product Description:
Contact Information
sales manager: Ms.nancy Lee
Tel:0086-0318-5259839
Fax:0086-0318-5111190
Mobile: 0086-18931803806
Website: cnkqrubber.com
 
 

Lead Rubber Bearing consist of a laminated rubber and steel bearing with steel flange plates for mounting to the structure. 90% of our isolators have an energy dissipating lead core.
The rubber in the isolator acts as a spring. It is very soft laterally but very stiff vertically. The high vertical stiffness is achieved by having thin layers of rubber reinforced by steel shims. These two characteristics allow the isolator to move laterally with relatively low stiffness yet carry significant axial load due to their high vertical stiffness. The lead core provides damping by deforming plastically when the isolator moves laterally in an earthquake.Isolators from 200 to 1200 mm in diameter and capacities of up to 3000 tons are
manufactured. Custom dimensions are available for special applications.

The shims for isolators are cut to exacting tolerances by laser. The steel mounting plates are machined by computer controlled milling machines that give high production throughput and accuracy. Molding each bearing takes 8 to 48 hours depending on the size of the bearing. The curing phase is continuously monitored to ensure that the rubber is uniformly cured throughout the bearing.

 

Qualified Base Isolator Lead Rubber Bearing for Construction
 Qualified Base Isolator Lead Rubber Bearing for Construction

 

Technical parameter

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
 

Basic performance

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.



Qualified Base Isolator Lead Rubber Bearing for Construction

 



 

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