Seismic Isolation Products

Your Professional Seismic Isolation Products Supplier

Our goal is to become your true partner in the field of seismic isolation products in China. Hebei Luze is a technology-based manufacturing enterprise focusing on the research and development, manufacturing and sales of seismic isolation and vibration absorption products. Our company is committed to applying advanced manufacturing technology and strict quality control standards to every product. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

Lead-core Rubber Bearings(LRB)
Lead Rubber Bearing (LRB) is one of the most widely used seismic isolation devices in the field of building seismic isolation engineering at present. The lead core rubber bearing is a composite...
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Friction Pendulum Bearing(FPB)
The friction pendulum isolation system/bearing is a type of bearing that achieves the isolation function by prolonging the vibration period of the structure through spherical pendulum motion and...
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Bridge Bearing
Bridge bearings are indispensable structural components that serve as the critical connection between a bridge’s superstructure (e.g., girders, decks) and substructure (e.g., piers, abutments)....
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Rubber Bearings For Space Frame
Grid rubber bearings are node support components developed based on the properties of polymer elastic materials and the mechanical requirements of steel structures. They are formed by compounding...
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Elastomeric Isolator
Elastomeric isolators and bearings, Elastomeric isolator, or Elastomeric bearings are essential structural components used in civil and bridge engineering to control the transfer of loads and...
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Tension-Resistant Friction Pendulum Bearings(TFPB)
Based on the conventional friction pendulum bearing, vertical tension-resisting capability is added. It can achieve sliding and rotation under tensile conditions, as well as the seismic reduction...
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High Damping Isolation Rubber Bearing(HDRb) For Buildings...
High Damping Rubber Bearing (HDR) is a seismic isolation and energy-dissipation device integrating vertical load-bearing, horizontal isolation, and damping energy-dissipation functions. It is...
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Linear Natural Rubber Seismic Isolation Bearing(LNR)
The Linear Natural Rubber isolation bearing(LNR) is a professional building isolation device, mainly composed of multiple layers of natural rubber sheets and thin steel plates alternately...
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Laminated Rubber Bearing
The laminated rubber bearing is formed by vulcanizing and bonding multiple layers of rubber sheets with thin steel plates. It has sufficient vertical stiffness to reliably transfer the reaction...
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High Damping Rubber Bearing
Isolation rubber bearings for building are building component products for seismic isolation and vibration absorption, which are developed in accordance with the current relevant national and...
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Friction Pendulum System
The building friction pendulum isolation bearings rely on prolonging the structural period and providing a relatively high damping ratio of the isolation layer to reduce the seismic effect.
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Linear Natural Rubber Bearing
The lead-core rubber bearing (LRB) is formed by laminating and bonding with lead-core rods, rubber layers, steel plates and so on.
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Why Choose Us

Our team

Our company has 22 technicians and 60 managers, with an efficient management model to ensure the company's stable operation and sustainable development.

Quality control

Our company ensures that it has 100% self-inspection capabilities before the product leaves the factory. Every product leaving the factory is strictly checked and has reliable quality.

Our certification

Our company has passed a series of management system certifications such as ISO9001:2015, ISO14001:2015, ISO45001:2018, etc.

Our service

The company has a professional sales team to provide you with high-quality pre-sales consulting services. During the order production process, customers can communicate with us at any time to understand the production progress. At the same time, we provide high-quality after-sales service to meet the different needs of customers.

Types of Seismic Isolation Products

The seismic isolation products produced by our company mainly include the following types:

Elastic Sliding Bearings
The elastic sliding plate bearings isolate earthquakes and reduce the upward- transmitted seismic energy by horizontally sliding the sliding materials on the sliding panels. They possess relatively high vertical bearing capacity and large horizontal deformation capacity. Moreover, the horizontal displacement is not affected by the height of the bearings, and the vertical deformation is limited. They are more suitable for seismic isolation in soft soil sites and are generally used in combination with other rubber isolation bearings.

High Damping Rubber Bearing
Isolation rubber bearings for building are building component products for seismic isolation and vibration absorption, which are developed in accordance with the current relevant national and industrial standards.

Advantages of Seismic Isolation Products

Elastic Sliding Bearings

Elastic sliding bearings have many advantages, including:

Simple mechanical model: The structure is relatively simple, and the mechanical model is easy to analyze and design, which facilitates engineers' application and calculation.

Good energy dissipation capacity: During an earthquake, the friction work done by the sliding surface consumes a large amount of seismic energy, increases the structural damping, reduces the seismic response, and improves the seismic performance.

Stable and reliable performance: It is less affected by factors such as velocity and displacement, and the isolation effect is stable under different earthquake working conditions.

High durability: The main components are made of materials that are resistant to corrosion and wear, resulting in good durability, a long service life, and low maintenance costs in the later stage.

High Damping Rubber Bearing

High damping rubber bearing have many advantages, including:

Environmentally friendly: High damping bearings from tiantie are made from green, environmentally friendly rubber, contributing to sustainable building practices.

No lead pollution: High damping bearings are free from lead pollution, ensuring compliance with health and safety standards and promoting a safer environment.

Application of Seismic Isolation Products

Elastic Sliding Bearings

Elastic sliding bearingscan be used for a variety of purposes, including:
Lifeline projects: Schools, kindergartens, hospitals, elderly care institutions, children's welfare institutions, emergency command centers, emergency shelters, radio and television stations, etc.
Major projects: Airport terminals, museums, exhibition halls, stadiums, lng storage tanks, nuclear power plants, etc.

High Damping Rubber Bearing

High damping rubber bearing can be used for a variety of purposes, including: The high damping rubber bearing, a type of high damping bearing, is an effective seismic isolators for buildings. It is widely used in seismic isolation design and the seismic reinforcement and renovation of bridges, buildings, hydropower projects, and other civil structures.

Specification of High Damping Rubber Bearing

Specifications (diameter, mm)	/	D400	D500	D600	D700	D800	D900	D1000
Shear modulus G	Mpa	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Total height of bearing H	Mm	178	201	223	267	302	353	390
Total thickness of rubber layer Tr	Mm	74	93	111	129	147	166	184
First form factor S1	/	≥15	≥15	≥15	≥15	≥15	≥15	≥15
Second form factor S2	/	≥5	≥5	≥5	≥5	≥5	≥5	≥5
Vertical compression stiffness Kv	KN/mm	1350	1750	1950	2450	2950	3650	4450
Horizontal equivalent stiffness (Shear strain 100%) Keq	KN/mm	0.98	1.22	1.49	1.73	1.98	2.24	2.48
Yield force Q	KN	23	36	53	73	95	120	149
Stiffness after yield Kd	KN/mm	0.68	0.84	1.02	1.19	1.36	1.53	1.7
Stiffness before yield Ki	KN/mm	8.1	10.1	12.2	14.3	16.3	18.3	20.4
Equivalent damping ratio heq	/	18.00%	18.00%	18.00%	18.00%	18.00%	18.00%	18.00%

Difference Between High Damping Rubber Bearing and Lead Rubber Bearing

Structure and composition: Lead rubber bearing are mainly composed of rubber, internal lead cores, and upper and lower connecting steel plates. This structure makes the lead core isolation rubber bearing not only have good elasticity, but also have certain damping characteristics. High damping rubber bearing mainly utilize the damping characteristics of high damping rubber materials to dissipate seismic energy. During the deformation process, high damping rubber consumes energy through intermolecular friction and internal friction.

Working principle and performance: The working principle of lead rubber bearing combines the elastic deformation of rubber and the plastic deformation of lead core. High damping rubber bearing mainly dissipate seismic energy through the deformation of high damping rubber. During the deformation process, high damping rubber consumes energy through intermolecular friction and internal friction, thereby achieving shock absorption effect.

Precautions for Use Seismic Isolation Products

Dust, dirt, and debris, even if invisible to the naked eye, have harmful effects on bearings. Prevent the entry of dust and dirt by keeping the bearings and their environment as clean as possible.

Heavy shocks during handling may cause bearings to be scratched, dented, or otherwise damaged, possibly resulting in their failure. Excessively strong impacts may cause chips or cracks.

Always use proper and well-maintained equipment when handling bearings and avoid general purpose tools. Since perspiration on the hands and various other contaminants may cause corrosion, keep the hands clean when handling bearings and wear gloves if possible. Monitor for rust caused by corrosive gasses or moisture.

High Damping Rubber Bearing Feature

High damping rubber bearing features high vertical loading capacity, b recovery ability and high damping ability. Full of hysteretic behavior, high damping rubber bearing can produce seismic isolation effect for small, middle or big earthquake.

High damping rubber bearing, itself producing the seismic isolation function, does not need install other devices. Thus, the cost of maintenance and repair is reduced. Temperature influences on the flexibility and damping performance of the high damping rubber bearing is extremely small, thus, high damping rubber bearing has a wide range of applied field.

Due to adopting the new developed nature rubber, high damping rubber bearing has excellent creep property. Covered with EPDM, the internal rubber of the high damping rubber bearing is completely protected which is resistant to the ozone and ultraviolet, thus, the high damping rubber bearing has better aging-resistant ability.

Packaging and Shipping of Seismic Isolation Products

Packing	Wooden Box
Shipping	Shipped by road, sea, rail or air

FAQ

Q: What is the difference between high damping rubber bearing and lead rubber bearing?

A: The major difference between the two is that in HDRB, the hysteresis damping solely depends on the formulation of the rubber compound, i.e. the mechanism of rubber in energy dissipation. In LRB, the damping is provided when the lead core yields.

Q: What is the effect of using high damping rubber bearings for seismic isolation of the buildings?

A: High damping rubber bearings (HDRBs) are commonly used in base isolation systems, which can protect the structures from heavy earthquake damage by elongating natural vibration periods of the structures and improving the energy dissipation capacity of the systems.

Q: What is the use of rubber bearing?

A: Rubber bearings are widely used in the automotive, railway, construction, defence, and industrial sectors for vibration isolation and structural support.

Q: What is the difference between high and low damping suspension?

A: High-speed compression damping helps prevent the suspension from bottoming out too quickly or excessively, reducing the risk of damage and maintaining better control of the vehicle. Low-speed compression damping, on the other hand, focuses on regulating the damping force during slower suspension movements.

Q: What is the role of damping in seismic isolation?

A: These dampers reduce displacements, but at the expense of significant increases in interstorey drifts and floor accelerations in the superstructure. An elementary analysis based on a simple model of an isolated structure is used to demonstrate this dilemma.

Q: What is a sliding bearing?

A: Sliding bearings are bearings where only sliding friction is generated. The shaft is generally supported by the sliding surface, with oil and air in between to facilitate sliding movement.

Q: What is the difference between rolling and sliding bearings?

A: Sliding bearings and Roller bearings are normally seen in many sectors to fix the friction in the machinery parts. Sliding bearings are applied in the sliding surface to replace heavy load whereas rolling bearings have been used in round surfaces such as DVD players and bicycle motors.

Q: What is the difference between plain bearing and sliding bearing?

A: The sliding movement occurs directly between the sliding layer of the bearing housing and the part to be supported. Plain bearings reduce friction by using specific materials, such as PTFE or graphite, to facilitate movement between 2 surfaces.

As one of the leading seismic isolation products manufacturers and suppliers in China, we warmly welcome you to buy seismic isolation products made in China here from our factory. All customized products are with high quality and competitive price.

seismic isolation products, Tension Resistant Friction Pendulum Bearing, Tensile Friction pendulum bearing