Page 114 - Çevre Şehir İklim İngilizce - Sayı 4

SEISMIC ISOLATION IN EARTHQUAKE-

RESISTANT STRUCTURAL DESIGN FOR
RESILIENT CITIES

Cenk ALHAN - Mert HACIEMİROĞLU

ABSTRACT
The problems experienced by the society after the latest Mw=7.8 Pazarcık
and Mw=7.5 Elbistan Earthquakes, which last happened in Kahramanmaraş
on February 6, 2023 in Turkiye painfully demonstrated the importance of
creating resilient cities that can continue daily life by recovering rapidly in the
face of natural disasters. Although the survival of buildings after such major
earthquakes is essential in terms of life safety, it has been clearly seen that
this is not enough for a resilient city, that public buildings and even industrial
facilities must continue their functions uninterruptedly, and that the damage to
the residences must remain limited and or repairable. It is possible to provide
this earthquake performance in buildings with seismic isolation technology.
Seismic isolation systems, in which floor accelerations and effective earthquake
forces are reduced thanks to the extended period of the building and some
of the earthquake energy damped at the isolation level, can protect both the
contents and the building itself from the harmful effects of the earthquake.
The most striking example of this is that the seismically isolated hospital
buildings in the region affected by the 6 February 2023 earthquakes, in which
more than 50,000 people lost their lives and immediate occupancy became
impossible for more than 300,000 buildings, survived the earthquake without
any damage. In this study, the definition of seismic isolation is made, seismic
isolation applications are explained, and the modeling of a sample seismically
isolated building and its behavior under near-fault and vertical earthquake
effects are discussed.

Keywords: Earthquake-Resistant Structure, Seismic Isolation, Damper,
Near-Fault Effect, Vertical Earthquake Effect

Year 2 / Issue 4 / July 2023 103