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Friction Pendulum Seismic Isolation Bearing

Friction Pendulum Base Isolator
Friction-Based Earthquake Isolation Bearing
Friction Pendulum Bearing for Bridge Construction
Spherical Pendulum Seismic Bearing
Spherical Pendulum Seismic Bearing
Friction Pendulum Base Isolator
Friction-Based Earthquake Isolation Bearing
Friction Pendulum Bearing for Bridge Construction
Spherical Pendulum Seismic Bearing
Spherical Pendulum Seismic Bearing

Friction Pendulum Isolation Bearings – Anti-Seismic Solution for Infrastructure

Friction Pendulum Seismic Isolation Bearings are advanced structural components designed to reduce seismic impact on buildings and infrastructure by utilizing the pendulum effect and controlled friction. These bearings consist of a combination of spherical sliding surfaces, friction plates, guide devices, and damping assemblies that work together to convert earthquake-induced kinetic energy into heat through friction, while also allowing controlled horizontal displacement and vertical load transfer. Their structural design includes upper and lower bearing plates, stainless steel sliding interfaces, rubber sealing rings, and a spherical pendulum mechanism that extends the natural vibration period of a structure, thereby reducing acceleration and enhancing seismic protection. Available in fixed (GD), one-way sliding (DX), and multi-directional sliding (SX) types, Friction Pendulum Bearings accommodate various movement demands and structural layouts. Key advantages include automatic re-centering, reliable performance across different load conditions, and minimal influence from environmental factors. These bearings are widely applied in bridges, high-rise buildings, hospitals, museums, and other critical facilities in seismic zones, ensuring long-term durability, energy dissipation, and structural resilience during earthquakes.
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Aohong manufactures high-performance Friction Pendulum Seismic Isolation Bearings designed to provide reliable seismic protection for large-scale civil engineering structures. These advanced bearings utilize the pendulum principle and sliding interface friction to reduce seismic energy and extend the vibration period of the superstructure. By enabling both vertical load-bearing and horizontal displacement, Friction Pendulum Seismic Isolation Bearings play a key role in structural resilience across bridges, buildings, and critical infrastructure.

Structural Design and Functional Variants

Friction Pendulum Seismic Isolation Bearings consist of upper and lower bearing plates, stainless steel sliding interfaces, spherical crowns, wear-resistant plates, shear connectors, and sealing elements. Aohong provides three main variants based on movement direction:

Friction Pendulum Bearing
  • GD (Fixed Type): Designed for strong vertical loads with anti-fall and seismic absorption functions.
  • DX (One-Way Movable): Offers horizontal sliding in a single direction with shock-isolation and anti-drop features.
  • SX (Two-Way Movable): Enables full multidirectional displacement with robust seismic damping and structural stability.

Each model is available in custom configurations, including unidirectional, bidirectional, universal, or fixed settings to meet specific design needs.

Performance Features

  • Converts kinetic energy into thermal energy through controlled friction.
  • Provides reliable seismic isolation with self-resetting capability.
  • Maintains vibration periods independent of load mass.
  • Minimizes lateral and vertical displacements during earthquakes.
  • Offers high resistance to environmental impacts and aging.

Applications

  • Seismically active bridge structures and viaducts.
  • Base-isolated high-rise buildings, hospitals, and emergency centers.
  • Cultural heritage and historical buildings requiring retrofit isolation.
  • Data centers and critical operation facilities requiring uninterrupted function during seismic events.

Material & Construction

  • Plates: Stainless steel top and bottom bearing assemblies.
  • Pendulum Ball: Hardened wear-resistant alloy core.
  • Sliders: PTFE composite sliding interfaces for reduced friction.
  • Housing: Corrosion-resistant steel housing with elastomeric seals.

Common Sizes and Technical Parameters

  • Load Capacity: 500 kN to 30,000 kN
  • Horizontal Displacement Range: ±100 mm to ±500 mm
  • Bearing Radius: 1,000 mm to 3,000 mm (customizable)
  • Vertical Height: 120 mm to 400 mm
  • Friction Coefficient: 0.03 to 0.08 (with lubricated surface)
  • Operating Temperature: -40°C to +60°C

Standards and Quality

  • Compliant with EN 15129, AASHTO Guide Specifications for Seismic Isolation Design, and GB 20688.
  • Tested for dynamic performance, fatigue resistance, and sliding wear.
  • ISO-certified manufacturing with customizable technical documentation available.

Why Choose Aohong Friction Pendulum Bearings?

Aohong’s Friction Pendulum Seismic Isolation Bearings are engineered for durability, accuracy, and seismic efficiency. With proven performance in both new construction and seismic retrofit projects, our bearings deliver long-term structural safety and low maintenance. Custom design options and technical support ensure seamless integration into your project requirements.