Performance Evaluation of Reinforced Concrete Buildings during the Sivrice-Elazlǧ Earthquake (M w = 6. 8, January 24, 2020) in Accordance with Turkish Earthquake Code


DEMİR S. , GÜNAYDIN M. , ATMACA B. , ALTUNIŞIK A. C. , HÜSEM M. , ADANUR S. , ...More

Journal of Earthquake and Tsunami, vol.15, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15
  • Publication Date: 2021
  • Doi Number: 10.1142/s1793431121500184
  • Title of Journal : Journal of Earthquake and Tsunami
  • Keywords: Collapse, damage, earthquake, Elazig-Sivrice, failure, reinforced concrete building, Turkish Earthquake Code, TURKEY, DAMAGES, VAN

Abstract

© 2021 World Scientific Publishing Company.A great number of reinforced concrete building structures were damaged or collapsed during the earthquake that hit Sivrice district of Elazlǧ city located in the southwest of the Eastern Anatolia Region of Turkey on January 24, 2020. Magnitude of the earthquake were announced as Mw=6.5 and Mw=6.8 by Kandilli Observatory & Earthquake Research Institute (KOERI) and Earthquake Department of the Disaster and Emergency Management Presidency (AFAD), respectively. More than a thousand of aftershocks with the magnitude of 1.2-5.1 occurred between January and February 2020. The magnitude of the structural damage was relatively high compared with the peak value of recorded ground acceleration (2.85m/s2) at the epicenter (Sivrice district) of the earthquake. It was determined that 584 buildings were demolished, 6845 were severely damaged, 1207 were moderately damaged, 14,389 were slightly damaged and 14,317 were undamaged. Also, there were 235 buildings that required urgent demolition. In this paper, the performance of the reinforced concrete buildings during the Sivrice-Elazlǧ earthquake is presented along with time-histories of ground motion records and response spectrums. Observed design and construction practices were carefully evaluated and compared with Turkish Earthquake Code. It was seen that the most significant causes of the failures were due to the poor concrete quality, the use of non-ductile detailing, the poor project design and construction quality. According to field inspections of our technical team, it is concluded that performances of the undamaged buildings following earthquakes do not prove that they have adequate seismic safety.