Lead Rubber Bearing Isolator System to Earthquake Bridge Bearing

• Customization: Available
• After-sales Service: Installation Guide
• Warranty: 2 Years After Leaving The Factory
• Model NO.: JT/T8
• Certification: GB, CE/ISO
• Usage: Highway Bridge
• Structure: Pull Pressure Bearing
• Material: Lead Bearing
• Activity: Multi Direction Movable Bearing
• Application: Building, Bridge, Highway Bridge
• Shape: Round, Rectangular
• Name: Rubber Bearing
• Dimension: Customzied
• Size: Customized
• MOQ: 10 Pieces
• Transport Package: in Bag, on Pallet
• Specification: color: black, orange, etc.
• Trademark: HENGJINGGONG
• Origin: Hebei, China
• Production Capacity: 10000
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 20.000kg

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.

Working principle

    The lead rubber bearing has same mechanical properties with laminated rubber bearing. Besides, it has high damping property.

    As we all know, the laminated rubber bearing has large displacement deformation in horizontal direction.

    In the earthquake, this structure can separate top and bottom structure vibration, enlarge self vibration cycle and reduce seismic force. Besides, the lead core will be squeezed and yielded during the shear process to dissipate Seismic force.

 

After the earthquake, the lead rubber bearing can help building restore the normal position through dynamic recovery and recrystallization of lead core and shear strain of laminated rubber bearing.

• Vertical loading transfer process: beam → top embedded steel plate → top connecting steel plate → top sealing steel plate → laminated rubber bearing with lead core structure → bottom sealing steel plate → bottom connecting steel plate → pier.
• Horizontal loading transfer process: pier → bottom anchor bolts → bottom connecting steel plate → top sealing steel plate and shear tenon → top connecting steel plate → top embedded steel plate → anchoring components.

Features
1)Stiff ands strong in vertical direction but flexible in horizontal direction.
2)Absorb earthquake-generated force by changing the bearing's shape.
3)Allow the building 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)Easy to install without a separated damper
6) Low maintenance.

Product Parameters

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	709ºCx24H	≤30	%
5	BRITTLENESS TEMPERATURE		≤-50	ºC
6	OZONE AGING(50PPHM,20%ELONGATION, 40°Cx48H)		NO CREAK	--
7	AIR AGING	HARDNESS CHANGE (SHORE A)	≤+6	HD
		TENSILE STRENGTH CHANG RATE	≤12	%
		ELONGATION AT BREAK CHANG RATE	≤20	%

LRB Dimension TableIn table :a-Long  side size of Square Bearing internal, b-Short side sizeHow do base isolators work?

    Base isolation is a technique developed to prevent or minimise damage to buildings during an earthquake. It has been used in New Zealand, as well as in India, Japan, Italy and the USA.

    A fixed-base building (built directly on the ground) will move with an earthquake's motion and can sustain extensive damage as a result.

    When a building is built away (isolated) from the ground, resting on flexible bearings or pads known as base isolators, it will only move a little or not at all during an earthquake.

Detailed Photos

Packaging & Shipping

Packaging:
Our rubber waterstop strips are carefully packaged in sturdy cardboard boxes to protect them from damage during transit. Each box is designed to withstand the rigors of shipping while keeping the contents secure and intact. For ease of handling and to optimize space efficiency, the boxes are neatly stacked on pallets. This method not only ensures the product's safety but also facilitates swift and organized loading and unloading at the destination.

 

Shipping:
We primarily utilize sea freight for the transportation of our rubber waterstop strips, offering a cost-effective and reliable mode of delivery. Our shipping process is streamlined to accommodate large volumes and long distances, ensuring your order arrives at its destination in the best possible condition. For customers with specific requirements or urgent needs, we are open to discussions and can tailor our shipping solutions to meet your unique demands.

 

Company Profile

Hengshui Jingtong Rubber Co., Ltd. is a comprehensive company engaged in water stop, waterproof materials, bridge building isolation materials, engineering rubber used in supporting projects such as highway bridges, tunnels, water conservancy, electric power, railway, etc. Relying on China Hengshui Rubber City Hengshui, the company has its own production capacity. It is a new rising show in the domestic engineering rubber industry, with advanced technology, mature technology and reliable quality.Jingtong rubber covers an area of 98000 square meters, with a building area of 45000 square meters. There are 20 professional senior technicians, and a diligent and dedicated management team. All employees provide high cost-effective engineering rubber products for new and old customers with scientific management, rigorous and realistic working attitude and honest and reliable service concept.The waterproof roll produced by the company has excellent performance, long service life, wide application range, safety,simplicity, high temperature resistance, 90 ºC does not flow, low temperature - 25 ºC does not embrittle. It can be used for waterproofing of buildings, basements, bridges, parking lots, roofs, gardens, swimming pools, reservoirs, tunnels and other projects of industrial and civil buildings. This product has good low temperature flexibility and elastic extension, especially suitable for buildings in high cold area. With high quality products and complete specifications, the company adheres to the working policy of high starting point, high standard, high quality and high efficiency, actively introduces technical talents and takes the road of prospering the factory through science and technology. The company strives for survival by quality, develops by prestige, and provides perfect after-sales service. We sincerely welcome friends from all walks of life. Now the company mainly produces and sells "HENGJINGGONG" brand building materials, including: Rubber / PVC / EVA waterstop, water swelling  waterstop rubber, building sealant, butyl sealing tape, SBS modified asphalt waterproof roll, butyl waterproof roll, bridge building isolation bearing, bridge rubber bearing, plate rubber bearing (rubber pad), basin type rubber bearing, spherical  bearing, bridge expansion device , bridge rubber inflatable core mold (hollow board air bag), rubber air bag (pipe stopper, rubber water bag) and other bridge engineering and waterproof engineering products.

Certification

Why choose us

FAQ

1. who are we?
We are based in Hebei, China, start from 2013,sell to Domestic Market(40.00%),Southeast Asia(23.00%),Africa(16.00%),North America(7.00%),South America(7.00%),Western Europe(7.00%). There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Bridge Expansion Joint,Rubber Waterstop,Swelling Waterstop Strip,Seismic Isolation Bearing,Rubber Bearing Pad

4. why should you buy from us not from other suppliers?
1.More than 20 professional senior technical personnel.
2.There are 10 series,over 200 species and more than 2,000 specifications.
3.All products have been authenticated by the Ministry of Communications.
4.Self-research and development,professional.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese