Factory-Direct Lead Rubber Bearings (LRB) for Superior Seismic Protection

Top-Quality Seismic Isolation Solutions for Bridges and Buildings

Lead Rubber Bearing Pad

Lead Rubber Bearing (LRB), also known as lead-core rubber bearings, are advanced seismic isolation devices. Featuring multi-layer natural rubber and a central lead core, they provide exceptional flexibility, damping, and energy absorption. Ideal for bridges and buildings, LRBs reduce earthquake impacts and enhance structural stability.

Our factory offers customizable designs, ensuring compliance with national and international standards. With our expertise and top-quality materials, our LRBs are durable and ideal for both new constructions and retrofitting projects.

Principle

Laminated Bearing Pad provides seismic isolation by combining multi-layer natural rubber and a central lead core. During an earthquake, the lead core dissipates energy through plastic deformation, converting kinetic energy into heat, while the rubber layers absorb vibrations and allow horizontal movement. This dual action significantly reduces seismic forces and helps the building return to its original position post-earthquake, ensuring enhanced structural stability and integrity.

Mechanical properties and specifications

The series of Laminated Rubber Bearings bearings can be designed ad hoc to satisfy all international standards (i.e., EN 15129, AASHTO, etc.).

Structure and Advantage

Multilayer Rubber-Steel Laminated Structure
LNR bearings consist of alternating layers of natural rubber and steel plates. This design provides:
– Rubber layers with good elasticity and energy dissipation capability
– steel plates for reinforcement and stiffness
Large Shear Deformation Capacity
The rubber layers allow large horizontal shear deformations to accommodate seismic and thermal movements.
Effective Connection to Superstructure
LNR bearings are effectively connected to beams, piers etc., transferring horizontal forces to the substructure.
Fixed and Sliding Types
LNR bearings can be either fixed type relying on rubber shear deformation, or sliding type allowing displacement through a sliding interface.

Application

Lead Rubber Bearing (LRB) are vital for seismic isolation in:

1. Bridges: Highway and railroad bridges.
2. Large Infrastructure: Nuclear power plants.
3. Buildings:
– Schools, hospitals, and essential service buildings.
– Government, disaster command centers, and emergency shelters.
– Data centers, banks, and facilities with valuable or hazardous materials.
– Libraries, commercial complexes, and residences.

Test

For lead rubber bearing, we possess top-tier technology in China, ensuring 100% compliance in testing. Our products are exported to numerous countries, meeting EN15129, EN1337, AASHTO, and ASTM standards.

Accessories & Package

Accessories include:
Anchor bolts, Embedded plate

Package: Pallets, wood box or customized

Unrivaled Quality Lead Rubber Bearing Pad

Indulge in excellence with our precision-crafted elastomeric pads, born from top-tier rubber.
Enjoy durability, aesthetics, and flawless performance. Our rigorous quality controls and secure packaging guarantee a reliable solution tailored for you.

Negotiation Stage

Customer Needs Analysis: Understand your specific requirements.
Review Drawings: Check your design and technical requirements.
Quotation: Provide a detailed quote and confirm delivery time.
Production Drawings: Submit drawings for your approval.

Production Phase

Quality Control and Surface Treatment: Implement strict quality control measures.
Production Monitoring: Monitor key production stages, ensuring product quality.
Quality Certification
Final Product Testing: Conduct performance tests on finished products to ensure they meet performance standards.

Packaging and Delivery

Product Packaging: Properly package products and accessories.
Export and Documentation: Arrange export and ensure accurate documentation.
Logistics Tracking: Provide real-time shipment tracking.

Installation and After-Sales

Installation Guidance: Offer detailed installation guides or videos.
Technical Support: Provide after-sales technical support.
Follow-up and Feedback: Conduct regular follow-ups and collect feedback.

Installation

Install base plate, correct position and elevation.
Install upper components, adjust position and height.
Weld and connect all components to ensure overall strength.
Inspect and test run to ensure proper operation.
Pedestal top surface horizontal deviation must not exceed 0.5%, installed top must not exceed 0.8%.
Bearing center planar position deviation must not exceed 5mm.
Bearing center elevation deviation must not exceed 5mm.
Apply anti-corrosion treatment to connection plates and exposed bolts.
During installation, record pedestal/bearing top surface levels, bearing center position and elevation.
Provide temporary protective covering around bearings during construction stage.