Principle of isolation and energy dissipation of friction pendulum isolation bearing
The principle of friction pendulum isolation bearing isolation energy dissipation is to use the design of arc surface to extend the vibration period of the structure to greatly reduce the amplification effect of the structure caused by earthquake action, and through the friction between the circular and strong bends of the bearing The collision is used to consume seismic energy and reduce the input of seismic energy. After an earthquake, its unique arc sliding surface has an automatic reset function, which can effectively limit the displacement of the isolation bearing and restore it to its original position after the earthquake.
Friction pendulum isolation bearing is a kind of earthquake isolation device used in building structures. It mainly achieves the seismic isolation effect by using friction and swing, reducing the stress on the building structure under earthquakes or other external forces, and reducing the destructiveness of earthquakes to buildings.
Friction pendulum isolation spherical bearings generally consist of upper bearing plates, stainless steel plates, upper wear-resistant plates, spherical crowns, lower wear-resistant plates, rubber sealing rings, lower bearing plates, shear plate components and anchoring components.
Our company’s friction pendulum isolation spherical bearings are divided into the following three types in terms of structure and function, and each can be designed into a one-way, two-way, universal, or fixed structure to facilitate the designer’s choice:Shangze rubber-plastic friction pendulum shock-absorbing isolation bearing has a simple structure and clear shock-absorbing mechanism. It is suitable for structures that have no tension and only slide to reduce and isolate earthquakes.
The friction pendulum isolation bearing is composed of a certain number of friction plates and guide devices. When the structure undergoes horizontal displacement under the action of earthquakes or other vibrations, friction will occur between the friction plates. The friction force can convert the kinetic energy of the structure into thermal energy, thereby reducing the vibration response. At the same time, the guide device can limit the vertical displacement of the structure and ensure the stability of the structure.
The installation method of friction pendulum isolation bearing is as follows:
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Preparatory work: Before installing the friction pendulum isolation bearing, it is necessary to design and calculate to determine the number, location, size and other parameters of the bearing. At the same time, the bearing installation area needs to be cleaned to ensure that the foundation surface is clean and flat.
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Install the foundation: According to the design requirements, drill holes and pour concrete on the foundation surface, leaving the fixing bolts or anchoring accessories of the guide device.
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Install the guide device: Fix the fixing bolts or anchor accessories of the guide device on the foundation surface to ensure its verticality and level.
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Install the friction plate: Place the friction plate on the guide device according to the layout required by the design drawing, ensuring that the gap between the friction plate and the guide device is even.
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Install the top plate: Place the top plate on the friction plate and connect it with the fixing bolts or anchor accessories of the guide device, and tighten them one by one using a wrench or torque wrench.
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Adjustment and testing: After installation is completed, make adjustments to ensure that the horizontality and verticality of the support meet the design requirements. Load test the supports using test instruments to verify the performance and reliability of the supports.
It should be noted that the installation of friction pendulum isolation bearings requires a professional construction team, operating in accordance with the design requirements and the installation manual provided by the manufacturer, and following relevant construction specifications and safety regulations. During the installation process, attention should be paid to protecting the support to avoid damaging or contaminating the friction plate and guide device.
Hebei Shangze, as a professional friction pendulum isolation bearing manufacturer, has always been committed to providing high-quality products and excellent services. Before shipping, we will carefully check the quantity and quality of the goods, and use the most convenient and reliable packaging method to ensure the safety of the products during transportation. At the same time, we will provide full tracking service, if you have any problems or questions during the transportation, please feel free to contact us. Every customer’s order is very important to us and we will make every effort to ensure your satisfaction.
Thank you again for your support and we look forward to establishing a long-term cooperative relationship with you.
Hebei Shangze Rubber and Plastic Products Co., Ltd. is a modern enterprise integrating the R&D, production and sales of rubber and plastic products. The company is located in the High-tech Zone, Hengshui City, Hebei Province, in the southeast of Hebei Province, in the hinterland of the North China Plain, with Bordering Beijing, Tianjin, and Shijiazhuang, and close to the national arteries Beijing-Kowloon and Shijiazhuang Railway, the transportation is very convenient. The company mainly produces steel skeleton composite pipes, pile foundation acoustic pipes, prestressed corrugated pipes, plastic corrugated pipes, silicon core pipes, steel fiber series, drainage pipes, bridge guardrail brackets, bridge bearing deceleration and isolation products, and expansion joint devices. products, waterstop products, waterstop strips and other products. Each series of products can be processed and manufactured according to drawings. The company has advanced technology, sophisticated equipment, assembly line operations, and excellent product quality.
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Seismic isolation bearing is a device commonly used in building and bridge structures. Its main function is to reduce the impact of earthquakes, wind loads and other dynamic loads on the building structure, thereby providing higher structural stability and safety. Seismic isolation bearings can effectively isolate the energy transmitted from seismic waves to the structure, reduce post-earthquake damage, and protect the integrity of the building and its internal equipment.
Seismic isolation bearings can be divided into many types according to their structure and materials. The most common types include rubber isolation bearings,Lead isolationsupport,High damping rubber bearing、Elastic shock-absorbing bearings and tensile friction pendulum shock-absorbing isolation bearings.
Rubber isolation bearing is a kind of isolation device made of rubber material. It is highly compressible and deformable, and can quickly absorb and disperse energy during earthquakes, thereby reducing the vibration of buildings. Rubber isolation bearings usually consist of one or more layers of rubber gaskets that can be adjusted as needed to meet different load and vibration requirements. Rubber isolation bearings also offer the advantages of long service life, low maintenance costs and high reliability.
Lead core isolation bearings consist of an outer steel bearing and an inner lead core. Steel bearings are often made from high-strength steel and are designed to withstand gravity loads and other non-seismic loads from a building or bridge. The lead core serves as a seismic isolation component and has good seismic isolation capabilities. The main function of the lead core is to convert seismic force or vibration energy into heat energy through its lower stiffness and good energy absorption performance when earthquakes or other external vibrations occur, thereby reducing the vibration force experienced by buildings or bridges. It should be pointed out that the quality and size of lead-core isolation bearings need to be strictly controlled during the design and installation process to ensure their working effect and safety. In practical applications, structural engineers need to reasonably select and calculate the number, size, and layout of isolation bearings based on the characteristics and seismic conditions of the specific building or bridge to achieve the isolation effect.
The high-damping rubber bearing consists of an outer metal container and an inner lead rubber material. The outer container is usually made of steel or aluminum alloy and has sufficient strength and stability. The internal lead rubber material is a high-damping material with low stiffness and good energy absorption capabilities. It dissipates the energy of earthquakes or other vibrations through the elastic deformation of rubber and frictional damping of the internal metal container.
Elastic shock-absorbing bearing, also known as elastic bearing or rubber bearing, is a shock-absorbing device used in building structures. Its main function is to reduce the stress on the building structure and protect the safety of buildings and personnel by absorbing and dispersing energy under the action of earthquakes or other external forces. Elastic shock-absorbing bearings are usually made of rubber materials and have excellent elastic properties and durability. Its basic structure consists of two upper and lower metal plates clamped by rubber gaskets to provide vertical support under static load. When earthquakes or other external forces act on a structure, the gaskets deform through twisting or compression, absorbing and dissipating energy. In this way, the elastic shock-absorbing bearing can reduce the impact force on the structure and effectively reduce the vibration response of the structure.
Friction pendulum isolation bearing is a kind of earthquake isolation device used in building structures. It mainly achieves the seismic isolation effect by using friction and swing, reducing the stress on the building structure under earthquakes or other external forces, and reducing the destructiveness of earthquakes to buildings.
In general, as an important structural device, the isolation bearing can effectively reduce the impact of earthquakes and other dynamic loads on the building structure and improve the stability and safety of the building. Rubber isolation bearings,Lead core isolation bearing、High damping rubber bearing、Elastic shock-absorbing bearings and tensile friction pendulum shock-absorbing isolation bearingsThey are currently the main seismic isolation devices used. Each has different structural and material characteristics and can be selected and applied according to project requirements.
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