High-Performance Laminated Bearing Pad Manufacturer

Leading LNR linear Rubber Bearing Manufacturer Offering Top-Quality Earthquake Protection

LNR Laminated Neoprene Bearings

The LNR Laminated Bearing Pad consists of alternating structural steel plates and functional rubber layers. Steel plates provide vertical load capacity, while rubber ensures horizontal flexibility. The protective rubber layer shields the internal functional rubber from aging and environmental factors.

Seismic isolation bearings elongate the structure’s natural period and increase damping to isolate around 80% of earthquake forces. This enhances seismic performance by approximately 8–10 times compared to conventional buildings, maximizing the structure’s continued functionality during earthquakes.

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 Bearing Pad bearings can be designed ad hoc to satisfy all international standards (i.e., EN 15129, AASHTO, etc.).

Model	Design Loading(kN)	Rubber Diameter (mm)	Total Thickness of Rubber (mm)	Height of Bearing (mm)	Center Hole (mm)	Limit deformation (datum pressure)	Horizontal equivalent stiffness	Vertical stiffness(Kv)	Connection Plate


						%	kN/m	kN/mm	mm
GZP200	471	200	37	78	10	350	466	596	25025012
GZP300	1060	300	55	97.5	15	350	705	992	36036014
GZP350	1440	350	65	127	20	350	811	1450	40040016
GZP400	1880	400	74	140	20	350	931	1680	48048018
GZP500	2900	500	92	168	25	350	1170	2430	57057020
GZP600	4200	600	110	188	30	350	1409	2820	70570520
GZP700	5700	700	130	226	35	350	1623	3590	80080022
GZP800	7535	800	147	247	40	350	1875	4200	90090022
GZP900	9538	900	165	276.7	45	350	2114	5080	1000100025
GZP1000	11775	1000	183	305.5	50	350	2353	6010	1100110028
GZP1100	14248	1100	202	355	55	350	2560	6841	1195119530
GZP1200	16956	1200	220	395	60	350	2820	7900	1290129035
* The bearing capacity of the isolation pad listed in the table is calculated based on the allowable bearing capacity of 15Mpa (Category C). Please convert for other types of buildings.

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

Lifeline Projects
Schools, kindergartens, hospitals, nursing homes, child welfare institutions, emergency command centers, emergency shelters, broadcasting and television, etc.
Major Projects
Airport terminals, museums, exhibition halls, stadiums, LNG storage tanks, nuclear power plants, etc.
Prefabricated building structures, seismic retrofitting projects, etc.

Test

For building Laminated Bearing Pad, 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 Laminated 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 Stage

Material Transparency: Show material sources and standards.
Quality Control: Ensure quality with strict controls and surface treatment.
Production Monitoring: Monitor key production stages for quality.
Certification: Display compliance with international standards.
Performance Testing: Ensure products meet performance standards.

Packaging and Logistics Stage

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.