Page 242 - Çevre Şehir İklim İngilizce - Sayı 4

GENERAL PROPERTIES AND SEISMIC

PERFORMANCE OF HIGH RISK BUILDINGS IN

OUR COUNTRY

Ahmet YAKUT - Barış BİNİCİ

ABSTRACT
Low-to-Mid-rise reinforced concrete (RC) buildings constitute majority of the
building stock in our country. Nearly 50 percent of our RC building stock is
constructed before 2000 and thus they are known to not reflect the seismic
provisions of the 1998 and later codes. The insufficient seismic performance
of these structures was confirmed by their response in past earthquakes.
There is consensus that these buildings which showed poor performance
due to inadequate material, poor workmanship, inappropriate detailing, and
inadequate design, do not reflect some important requirements that were put
into practice after 2000 and are known to be critical for seismic performance.
Among these criteria, the most important ones are the promulgation of
1998 code that is more comprehensive than 1975 code, the use of ready-mix
concrete and high quality steel that were made compulsory by the revised
TS500 standard, the influence of Kocaeli and Duzce earthquakes of 1999 and
building inspection law that was put into in effect in 19 pilot cities in 2001 that
is expanded to whole country in 2011. In this paper, the typical properties of
our building stock are presented along with their seismic performance and
recommendations are provided for reduction of seismic risk.

Keywords: RC Building, Earhquake Risk, Structural Damage, Building With
High Risk, Urban Renewal

Year 2 / Issue 4 / July 2023 231