Page 320 - Çevre Şehir İklim İngilizce - Sayı 4

Disaster Resilient Buildings in Urban Regeneration

Figure 13. Foot Columns of a Building With Seismic Insulator - Prof. Dr. Süleyman Yalçın
City Hospital, İstanbul) (URL-6)
One of the important effects of seismic isolation on the building is to
increase the natural period of the building and prevent it from coinciding with
the dominant period of the earthquake, that is, the acceleration amplifications
that will occur due to the resonance effect. The earthquake will expect
a response in the form of an acceleration from rigid structures and a large
displacement from flexible structures. In Figure 14a, it is seen that the more
rigid the building is, the more spectral acceleration of earthquake increases.
(Özpalanlar, 2004).

a b
Figure 14. (a) The Effect of Rigidity Increase on Spectral Acceleration,
(b) The Effect of Period Increase on Spectral Acceleration

A large displacement response will be expected along with an increase in
the period in a building approaching flexible behavior when seismic isolation
is applied. The seismic isolators, here, receives this response within themselves
by making large deformations without transmitting it to the building as shown

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