Geology Reference
In-Depth Information
Figure 3. Earthquake protection systems
2.
Energy Dissipation Systems:
External
devices fixed to the structure dissipate en-
ergy. Input: earthquakes, wind, etc. They
are installed in the structure with the aim
of dissipating most seismic energy entering
the same structure (Aiken et al., 1993, Tsai
et al., 1993).
3.
Mass Dampers:
They consist in one or more
masses added to the structure, generally at
the top floor. These masses are made with
such dynamic properties that they reduce
the response of the structure. Energy is
transformed into kinetic energy (translation
or rotation) in massive devices (possessing
big mass or big moment of inertia). Input:
earthquakes, wind, etc.
4.
Pre-Tension Cables:
These cables stiffen
the structure and increase the axial load in
the columns reducing, in some cases, the
rotation of their ends.
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