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It all started with a small wooden bearing.
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High Performance Bearing, HPB

To improve the seismic performance of a bridge as a whole, increase its long-term durability, and reduce construction costs

What is seismic isolation and vibration control sliding system?

  • Definition

    “A system that uses seismic isolation bearings and vibration dampers in the substructure of specific spans to control the behavior of a multi-span continuous girder bridge that is unlikely to collapse during an earthquake. Sliding bearings are installed between abutments to isolate the upper and lower structure. This seismic-resistant structure is less susceptible to statically indeterminate forces caused by temperature changes and other factors.

  • Effects
    • No need to adjust horizontal displacement during construction, e.g., post-sliding
    • Reduces the effects of statically indeterminate forces due to temperature changes and other factors on the seismic performance of bridges
    • Reduces seismic inertia with a longer period than that of the bridge
    • Use of low-friction sliding bearings in footings enables slimming down of footing columns and foundation piles
    • Seismic isolation bearings and vibration dampers can provide significant damping performance

How the seismic isolation and vibration control sliding system works

A seismic isolation and vibration control sliding system provides a combination of seismic isolation, sliding, and vibration control in a single bridge.

Structure and characteristics of Oiles HPBs

  • Suitable for a high surface pressure and high speeds

    The Oiles HPB uses a low-friction sliding material that can handle a high surface pressure and high speeds using technology related to bearings, which are our core products.