Friction pendulum isolation bearing

Building Friction Pendulum Isolation Bearing (FPS)
Building friction pendulum isolation bearing is a kind of bearing that realizes the vibration isolation function by using the pendulum principle, and has the ability to bear vertical load and horizontal displacement. The bearing uses the friction of the sliding interface to consume the seismic energy to realize the shock absorption function, and the spherical swing prolongs the movement period of the structure to realize the seismic isolation function.

Features:
1. Self-adjustment of lateral stiffness and reset.
2. The vibration period has nothing to do with the loaded mass.
3. Strong reliability and little impact from the environment.

Structural form and composition of friction pendulum vibration isolation bearing, friction pendulum vibration isolation bearing is a new type of friction pendulum vibration isolation bearing obtained through a lot of technical improvement and test verification. The vibration isolation bearing structure is A new structure based on the friction pendulum structure, which is between the friction pendulum and the equal diameter friction compound pendulum. The support adopts a non-equal diameter double spherical sliding surface system. The radius comprehensively adjusts the allowable bearing displacement of the upper and lower plates of the bearing, which avoids that the temperature change displacement and the isolation displacement of the single pendulum bearing are concentrated on the upper bearing plate, and the size ratio of the upper and lower plates of the bearing is seriously out of balance, ensuring the overall bearing of the bearing. The structure is uniform and coordinated to avoid problems in the selection, structural design, commissioning and installation of the support in the actual project.
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  • Friction pendulum vibration isolation bearing structure:
    There are many classification methods for friction pendulum vibration isolation bearing structures, and they are often divided into three structural forms according to their performance:
    1) The fixed bearing code is GD, which has strong vertical bearing performance, vertical steering performance, anti-drop beam performance and shock isolation performance.
    2) The code name of the one-way movable bearing is DX. Compared with the fixed bearing, in addition to the vertical bearing performance, vertical rotation performance, anti-drop beam performance and shock isolation performance, this bearing also has a single direction. slip performance.
    3) The code name of the multi-directional movable bearing is SX. From the name, it can be known that in addition to the vertical bearing performance, vertical rotation performance, anti-drop beam performance and shock isolation performance of the unidirectional movable bearing, the maximum The difference is that the support can slide in both directions.

    The friction pendulum vibration isolation bearings are divided into fixed bearings, one-way movable bearings and two-way movable bearings according to their performance. difference.

    Its specific composition is as follows:
    ● GD consists of shock-absorbing top plate assembly, upper shock-absorbing slide plate, shock-absorbing ball pendulum, shear bolt, limit baffle, lower shock-absorbing slide plate, shock-absorbing bottom plate assembly, anti-fall beam structure, anchor bolt sleeve assembly and sealing assembly etc., wherein both the shock-absorbing top plate assembly and the bottom plate assembly contain stainless steel plates.
    ● DX consists of shock-absorbing top plate assembly, upper shock-absorbing slide plate, shock-absorbing ball pendulum, shear bolt, limit assembly, lower shock-absorbing slide plate, shock-absorbing bottom plate assembly, anti-fall beam structure, anchor bolt sleeve assembly and sealing assembly, etc. The structure, wherein the shock-absorbing top plate assembly contains stainless steel steel plate, and the shock-absorbing bottom plate assembly includes SF-1 composite plate in addition to stainless steel steel plate, and the limit assembly includes baffle plate and stainless steel plate.
    ● SX is composed of shock-absorbing top plate assembly, upper shock-absorbing sliding plate, shock-absorbing ball pendulum, lower shock-absorbing sliding plate, shock-absorbing bottom plate assembly, anti-drop beam structure, anchor bolt sleeve assembly and sealing assembly, among which, the shock-absorbing top plate assembly and baseplate assemblies contain stainless steel sheets.

    Schematic diagram of the fixed support structure:

    Friction pendulum shock-absorbing fixed bearing

Founded in 2016

Zhejiang Earthquake Prevention Technology Co., Ltd. is a holding subsidiary established by Hangzhou Diping Zhenan Technology Co., Ltd. in September 2020. Zhejiang Zhenfang Technology Co., Ltd. has a registered capital of 26 million yuan, its own factory building covers an area of 10,800 square meters, and the standard factory building area is 6,000 square meters. With the great help of the Institute of Engineering Mechanics of China Earthquake Administration, the company has established a technical team led by domestic experts in seismic reduction and isolation technology, which has laid a solid foundation for long-term development in the future.
Zhejiang Earthquake Prevention Technology Co., Ltd is a member of China Disaster Prevention Association. Famous Friction pendulum isolation bearing manufacturers and suppliers in China, we provide Friction pendulum isolation bearing for better Seismic Isolation system.

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product ADVANTAGE

  • Friction damper

    It mainly includes the middle steel plate, the two outer steel plates and the friction material between the steel plates.

  • Simple mechanical model

    Simple and easy analysis and design of structural vibration reduction.

  • Simple structure and low cost

    Even large earthquakes are not damaged, so there is no need to replace.

  • Damping

    The hysteresis curve is basically rectangular.

  • Stable performance

    Velocity correlation, displacement correlation is small.

  • Good durability

    No post-maintenance required.

  • Energy absorption

    Vertical bearing capacity, horizontal restoring force, damping (energy absorption) trinity.

  • Damping ratio

    Improved rubber formula, the equivalent damping ratio can reach more than 12%.

  • Maintenance costs

    Low maintenance and management costs (no additional damping devices required).

  • Environmental friendly

    HDR high damping rubber has low temperature dependence and is widely used in different climatic regions.

  • Creep properties

    HDR high damping rubber has the same superior deformation performance as natural rubber.

  • Aging resistance

    The surface of the high damping bearing is covered with a rubber protective layer to protect the internal rubber from ozone and ultraviolet rays.

  • Viscous resistance

    It is a kind of damper related to stiffness and speed.

  • Widely used

    It is used in high-rise buildings, bridges, seismic reconstruction of building structures and other fields.

  • Airbag

    The damper absorbs and dissipates the impact energy of the earthquake on the building structure to the maximum extent.

  • Silicone oil medium

    The medium has a small viscosity temperature coefficient, and good radiation resistance.

  • Electrical insulation properties

  • Ozone resistance, corona resistance