ANTISEISMIC DEVICES

 

  1. Elastomeric Bearings And Sliding Devices
  2. Transpecs

Our experience in construction has taught us to find the the most efficient and suitable seismic protection for a project. This protection is based on the following fundamental operational modes:

  • isolation: The principle involves isolating the structure from the movement of the ground by using flexible connectors, mainly structural elastomeric bearings or sliding devices, to increase the natural period of the structure to protect it from, and reduce the response to, the seismic acceleration.
  • connection: Seismic connectors have the characteristic of not only providing very low resistance to slow movements such as those due to temperature and stress-strain variations, but also providing a rigid link between the superstructure and its supports during rapid movements such as those caused by seismic events.
  • using dampers to reduce the effects on the protected structures. These dampers are generally used together with structural isolation bearings to reduce the movement of structures while limiting the forces to which they are subjected.

Solutions for buildings:

  • base isolation
    • the stiffness of the building is reduced
    • the damping of the building is increased
    • the effect of the earthquake is greatly reduced
    • the need of local strengthening of the building is minimized
  • energy dissipating bracings
    • the stiffness of the building is increased
    • the natural period of the building is reduced
    • the energy dissipation is reduced
    • the effect of the earthquake is reduced

Solutions for bridges:

  • base isolation using:
    • structural elastomeric bearings
    • sliding devices
  • mechanical and hydraulic connectors
  • dampers

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