Hot Sale Leading Rubber Bearing Isolator for Highway Bridges

• After-sales Service: 24 Hours-7 Days-Available
• Warranty: 2 Years
• Certification: DIN, JIS, GB, BS, ASTM
• Usage: Beam Bridge, Highway Bridge, Railroad Bridge
• Structure: Pull Pressure Bearing
• Material: Lead Bearing
• Model NO.: JT-LRB-01
• Activity: Multi Direction Movable Bearing
• Application: Building, Bridge, Highway Bridge
• Shape: Round, Rectangular
• Service Loading: as Per Requirements
• Other Bearings Types: Available
• Color: Black Only
• Transport Package: in Bag, on Pallet
• Specification: color: black, orange, etc.
• Trademark: JINGTONG
• Origin: Hebei, China
• HS Code: 4016999090
• Production Capacity: 10000

Product Description

 

Jing lead core rubber bearings with competitive  price

Lead Rubber Bearing or LRB is a type of base isolation employing a heavy damping. It was invented by William Robinson, a New Zealander. Heavy damping mechanism incorporated invibration control technologies and, particularly, in base isolation devices, is often considered a valuable source of suppressing vibrations thus enhancing a building's seismic performance. 

Lead rubber bearing, applied to building and bridge constructions, is a practical and cost-effective choice for seismic isolation. It is composed of laminated elastomeric bearing pad, top and bottom sealing & connecting plates and lead plug inserted in the middle of the bearing as shown in the following picture.

Specification 

Name: LRB bearing 

Material: rubber 

Brand : JINGTONG 

CR suit temperaturer : CR -25°C~+60°C

NR  suit  temperaturer: NR 

CR suit temperaturer : CR -25°C~+60°C

FeaturesStiff and strong in vertical direction but flexible in horizontal direction.Absorb earthquake-generated force by changing the bearing's shape.Allow the buildings to retain their original shapes and position owing to the high elastic force of rubber.Capable to adjust damping amount just by changing the number of lead plugs.Excellent vertical load capacity ranging from 5 tonf to 2000 tonf.Reduce the ground acceleration by extending the structure vibration period.High durable and elasticity of the rubber part - not suffer any damages during and after earthquake.Easy to install without a separated damper.Low maintenance.With stable bilinear behavior shown as the pictures 




Application
curved bridge
straight bridge
skew bridge 
city overpass bridge project

LRB Dimension Table

Size  a or do (mm)	Thickness	Thickness	Modulus of second shape	Ratio of Lead core area to bearing area Ap/A(%)
	Internal Single Rubber Layer  t1 (mm)	Internal Single  Layer  t1 (mm)
400	20≥t1≥11	≥3	≥4	≥3	≤10
450	20≥t1≥11
500	20≥t1≥11
600	25≥t1≥13
650	27≥t1≥14
700	29≥t1≥15
750	31≥t1≥16
800	33≥t1≥17
850	35≥t1≥18
900	37≥t1≥19
950	39≥t1≥20
1000	41≥t1≥21
1050	43≥t1≥22
1100	45≥t1≥23
1150	47≥t1≥24
1200	50≥t1≥25
1250	52≥t1≥27
1300	54≥t1≥28
1350	56≥t1≥29
1400	58≥t1≥30
1450	60≥t1≥31
1500	62≥t1≥32

In 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.

Package & Delivery 
1. packed in bag and then on pallet 
2.or as your request 
3. delivery within 7 days after payment 
4.usually transport by  sea

We see "quality, integrity and good service" as the basis for developing of a factory. We have rigid quality control system from raw material choosing to manufacturing and delivery. What's more, our products have passed ISO
and GB inspection. If you are still in anxiety, we can also provide the third party reports of more than 3000 projects
in domestic.