Bridge Isolator Bearing (LRB) , Lead Core Bridge Rubber Bearing for Building Vibration Damping
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| Customization: | Available |
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| After-sales Service: | 5 Year |
| Warranty: | 5 Year |
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Basic Info.
- Model NO.
- JT/T822-2011
- Certification
- DIN, JIS, GB, BS, ASTM, AISI
- Usage
- Beam Bridge, Highway Bridge, Railroad Bridge
- Structure
- Pull Pressure Bearing
- Material
- Lead Bearing
- Activity
- Multi Direction Movable Bearing
- Application
- Building, Bridge, Highway Bridge
- Shape
- Round, Rectangular
- MOQ
- 10 Pieces
- Horizontal Bearing Capacity
- 100-10000kN
- Vertical Pressure
- 100-10000kN
- Transport Package
- in Bag, on Pallet
- Specification
- color: black, orange, etc.
- Trademark
- HengJingGong
- Origin
- Hebei, China
- Production Capacity
- 10000
Packaging & Delivery
- Package Size
- 30.00cm * 30.00cm * 15.00cm
- Package Gross Weight
- 60.000kg
Product Description
Product Description
Lead Rubber Bearing – Excellent in Absorb Energy Dissipation and Seismic Isolation
Lead rubber bearing, also called lead core rubber bearing, LNR rubber bearing, has similar structure with high damping rubber bearing. It is an important component of seismic isolation bearing. It is composed of laminated rubber bearing and lead core. The lead core can not only bear the heavy load and horizontal force, but also absorb energy through plastic deformation of hysteresis damping.
Lead rubber bearing can be divided into round and rectangular shapes for different application. Additional, the lead core quantity can be single or multiple to supply maximum flexibility in the bridges or building.
Function of lead core bearing pad
*Top and bottom plates: transfer loading and constraint deformation of lead core.
*Lead plug: dissipate energy and decrease displacement.
*Steel reinforcing plates: increase vertical stiffness and constraint deformation of lead core.
*Internal rubber layers: support structure weight, accommodate rotation and displacement, recovery moving bearing to the original position.
*Rubber cover: protect reinforced steel plates and rubber layers.
*Lead plug: dissipate energy and decrease displacement.
*Steel reinforcing plates: increase vertical stiffness and constraint deformation of lead core.
*Internal rubber layers: support structure weight, accommodate rotation and displacement, recovery moving bearing to the original position.
*Rubber cover: protect reinforced steel plates and rubber layers.
Performance comparison between lead rubber bearings and ordinary rubber bearings
There are significant differences in damping performance between lead rubber bearings and ordinary rubber bearings. The damping coefficient of the former typically exceeds 15%, while that of the latter is generally below 5%. This excellent damping property allows lead rubber bearings to effectively extend the structural period of bridges and significantly reduce the acceleration response of the superstructure. Under seismic action, lead rubber bearings can significantly improve the stress state of the structure during the earthquake due to their unique mechanical properties, making them particularly suitable for being set in areas with a seismic intensity of 8 degrees or higher.
Product Features
Product Advantages
*High Vertical Stiffness: Vertical compression modulus 800-1000MPa, withstands building weight
*Horizontal Flexibility: Shear modulus 0.4-0.8MPa for effective isolation
*Large Deformation Capacity: Design shear strain ≥200%, ultimate strain ≥350%
*Excellent Durability: Anti-aging and ozone resistant, 50-year design life matching building lifecycle
*Temperature Adaptation: Stable performance from -40℃ to +60℃
*Horizontal Flexibility: Shear modulus 0.4-0.8MPa for effective isolation
*Large Deformation Capacity: Design shear strain ≥200%, ultimate strain ≥350%
*Excellent Durability: Anti-aging and ozone resistant, 50-year design life matching building lifecycle
*Temperature Adaptation: Stable performance from -40℃ to +60℃
*High Isolation Efficiency: 60%-80% seismic force reduction, proven in actual earthquakes
*Adequate Safety Margin: Ultimate capacity ≥1.5x design load with surplus deformation capacity
*Maintenance-free Design: 50-year service life with periodic inspection only, no wearing parts
*Cost Effective: 30% cheaper than imports while meeting highest domestic and international standards
*Adequate Safety Margin: Ultimate capacity ≥1.5x design load with surplus deformation capacity
*Maintenance-free Design: 50-year service life with periodic inspection only, no wearing parts
*Cost Effective: 30% cheaper than imports while meeting highest domestic and international standards
Specification
*Shear modulus: 0.8 MPa, 1.0 MPa, 1.2 MPa.
*Working temperature range: -25 °C to +60 °C.
*Lead core quantity: single or multiple.
*Shape: rectangular and round.
*Technical parameter
*Working temperature range: -25 °C to +60 °C.
*Lead core quantity: single or multiple.
*Shape: rectangular and round.
*Technical parameter
*Rectangular lead rubber bearing specifications.
*Round lead rubber bearing specifications.
*Round lead rubber bearing specifications.
No | Test Item | Technology Requirement | Unit | |
1 | Hardness (Shore A) | 60±5 | HD | |
2 | Tensile Strength | ≥ 18 | MPa | |
3 | Elongation At Break | ≥ 550 | % | |
4 | Compression Set | 709 °C × 24 H | ≤ 30 | % |
5 | Brittleness Temperature | ≤ -50 | °C | |
6 | Ozone Aging(50 PPHM, 20% Elongation, 40 °C × 48 H) | No Creak | – | |
7 | Air Aging | Hardness Change (Shore A) | ≤ +6 | HD |
Tensile Strength Chang Rate | ≤ 12 | % | ||
- | Elongation At Break Chang Rate | ≤ 20 | % | |
Installation
Product Details
Packaging & Shipping
Company Profile
Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.
We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to establishing long-term cooperative relationships with customers from both domestic and international markets.
FAQ
1.When can I get the quotation?
A:We usually quote within 24 hours after we get your inquiry.
A:We usually quote within 24 hours after we get your inquiry.
2.How long can I expect to get the sample?
A:The samples will be ready for delivery in 5-10days. The samples will be sent to you via express and arrive in 5-7days.
A:The samples will be ready for delivery in 5-10days. The samples will be sent to you via express and arrive in 5-7days.
3.How long is the delivery time
A:Usually 10-15 days, depending on the quantity purchased.
A:Usually 10-15 days, depending on the quantity purchased.
4.How can I get a sample to check your quality?
A:After negotiating the price, we will provide you with samples for testing.
A:After negotiating the price, we will provide you with samples for testing.
5.what can you buy from us?
Bridge Bearing Pad,Seismic isolation bearing,Expansion Joint,Rubber Inflatable Airbag,Waterstop Belt/Strip,Steel Expansion Joint,Butyl Tape
Bridge Bearing Pad,Seismic isolation bearing,Expansion Joint,Rubber Inflatable Airbag,Waterstop Belt/Strip,Steel Expansion Joint,Butyl Tape
6.What's payment term?
A:T/T, L/C at sight, Western Union
A:T/T, L/C at sight, Western Union
7. Do we have quality guarantee?
Of Course!
--from raw material to manufacturing, we have rigid quality control.
--before delivery, we have strict quality inspection.
--Third party inspection is also available at your request.
--We also have ISO, CE certificates.
Of Course!
--from raw material to manufacturing, we have rigid quality control.
--before delivery, we have strict quality inspection.
--Third party inspection is also available at your request.
--We also have ISO, CE certificates.
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