Model NO.: Dimension 100-2000mm Material: Neoprene Bearing Capacity: 400-30000kn Urgent Oder: Yes Transport Package: in Pallets or Wooden Cases Origin: Hebei, China Usage: Infrastructure Construction Certificate: ISO9000 Export Markets: Global Trademark: JianFeng Specification: As Drawing Requests HS Code: 5522233 Contact information
Sales Manager: kent
Mobile Phone: +86-15233296877
Company: Hengshui Jianfeng Engineering Rubber co., LTD.
1. Description of lead rubber bearing (Seismic Isolator)
The Lead Rubber Bearing (LRB), Vulcanized rubber layers are laminated between steel plates to form a flexible structural support. It is installed as a Damping Equipment under building structures so as to control the tremor of structure against the loads of earthquake.
2. Application of lead rubber bearing
Base Isolation System, which is a branch of manual technique to reduce the tremor of structure, is widely applied to the large sized structures such as road bridges, rail bridges and nuclear power station to minimize damages from dynamic loads like earthquake.
3. Special Features of lead rubber bearing
(1) Strong Points
(2)Property of Lead as a Suitable Material for Earthquake Absorbing Work
(3)The Economic Design
(4)The More Excellent Safety
4. Function of lead rubber bearing
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.
|ITEMS ||Common Type ||Winter Hardness |
|CR ||NR ||EPDM |
|Tensile Strength (Mpa)≥ ||19 ||19 ||16 |
|Elongation At Break (%)≥ ||450 ||500 ||350 |
|Adhesive Seperating Strength with PTFE at 180°C kgf/2.5cm ||5 ||5 ||4 |
|Brittleness Temperature≤ ||-40 ||-55 ||-65 |
|Compression Set (%) (70°Cx22H)≤ ||30 ||30 ||30 |
|Ozone Resistance 1PPm30°Cx100h ||No Cracking ||No Cracking ||No Cracking |
|Aging Factor%≥ ||0.8 ||0.85 ||0.8 |
|Hardness ( Shore A) ||60±5 ||60±5 ||60±5 |
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Product Categories : Bridge Bearing Series > Lead Core Rubber Bearing