Earthquake Seimisic System High Damper Rubber Bearing Bridge Elastomeric Bridge Vibration Isolation Bearing

• Customization: Available
• After-sales Service: Installation Guide
• Warranty: 2 Years After Leaving The Factory
• Model NO.: JT4261ED
• Certification: CE, ISO
• Usage: Building
• Structure: Laminated Rubber Bearing
• Material: Rubber and Steel
• Activity: One-Way Movable Bearing
• Name: Seismic Lead Rubber Bearing for Construction Build
• Leading Time: 15days
• Top Plate Shape: Square/Circle
• Print Stanard: ISO Print Standard
• Steel Plate Thickness: 22-25mm
• Customized: Customized
• Transport Package: with Film on Pallet
• Specification: CE, ISO
• Trademark: HengJingGong
• Origin: China
• HS Code: 40169990
• Production Capacity: 10000 PCS Per Year
• Package Size: 40.00cm * 40.00cm * 20.00cm

Product Description

Product Description

High Damping Rubber Bearing – Fixed and Sliding Types for Large Displacement

High damping rubber bearing, also called HDR bearing pad, is one of seismic isolation bearing. It has excellent seismic isolation performance to effectively reduce the bridge damage caused by earthquake.

HDR bearing pad is composed of specialized designed rubber with high damping performance, sandwiched together with steel plate layer. When installing, the high damping rubber bearing is commonly used with top and bottom steel plate and connection accessories.

Function

*Effective Seismic Isolation: Extends the structural period to avoid the predominant seismic period, significantly reducing the seismic response of the upper structure.

*Energy Absorption: Efficiently dissipates seismic energy through hysteretic deformation (plastic deformation of the lead core or internal friction of high-damping rubber).

*Load Support: Provides high vertical load-bearing capacity and stiffness to stably support the weight of the upper structure.

*Displacement Adaptation: Allows significant horizontal shear deformation to accommodate movements caused by temperature changes, shrinkage, and other factors.

Working principle

    During earthquake, the vibration from various directions will impact fixed base building and results in deformation and building or bridge damages. The high damping bearing pad is improved through high damping material, which the damping ratio can approach to 15% to 18%.

    When the earthquake comes, the high damping rubber bearing will increase the horizontal displacement through rubber shear deformation and reduce friction coefficient. The large displacement can weaken the vibration from all direction and reduce the damage of building and bridges.

Joint structure

*The HDR (Ⅰ) rubber bearing. It is designed with top and bottom embedded steel plate. And the rubber bearing is connected with pier and beam by sleeve. The top and bottom loading plate is connected with sleeve by anchor bolt. The top and bottom embedded steel plate is connected with sleeve by welding.
*HDR (Ⅱ) rubber bearing. It is designed with top embedded steel plate and without bottom embedded steel plate. The bottom loading bearing is connected with sleeves with anchor bolts. The top embedded steel plate is connected with top loading plate with shear tenon. And the top embedded steel plate is connected with sleeve by welding.

HDR (Ⅰ) rubber bearing.

HDR (Ⅱ) rubber bearing.

Specification

Specifications

*Working temperature range: -40 °C to +60 °C.
*Rad: 0.006 rad and 0.008 rad.
*Damping ratio:

    HDR (Ⅰ) bearing rubber: 15%.
    HDR (Ⅱ) bearing rubber: 12%.
    LNR bearing rubber: 10%.

Feature

*Excellent horizontal displacement. absorb shock energy effecively.
*Excellent reset structure. there is no residual displacement.
*High damping material. 10% to 18% damping capacity for shock absorption.
*Wide range structure for different environments and displacement requirements.
*Economical and high performance for lower total construction budget.
*Easy installation and replacement for lower maintenance cost.

Parameter Name	Unit	Specification Range
Damping Ratio	%	≥12
Load Capacity	kN	As per design requirement
Vertical Stiffness	kN/m	As per design requirement
Horizontal Stiffness	kN/m	As per design requirement
Vertical Compression Deformation	mm	≤10
Horizontal Deformation	mm	≤30
Durability	-	Fatigue life over 20 million cycles
Temperature Range	℃	-40 to +70

Damping structure

*Fixed type (HDR rubber bearing). The high damping rubber has excellent horizontal shear performance to bear the horizontal force. It can absorb vibration through large displacement in horizontal direction and hysteretic energy.

    *Rectangular HDR rubber bearing.
    *Round HDR rubber bearing.
*Sliding type (LNR rubber bearing). The displacement is achieved by sliding friction. The top stainless steel plate and PTFE sliding plate can reduce friction coefficient and achieve large displacement for shock absorption.

    *Rectangular LNR rubber bearing.
    *Round LNR rubber bearing.

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.

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.

3.How long is the delivery time
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.

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

6.What's payment term?
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.