U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Lessons from the 2023 Southeast Turkiye Earthquakes: A Study on Damaged RC Buildings Considering the Hassan Index

Published

Author(s)

Cemalettin Donmez, Jeff Dowgala, Meltem Eryilmaz-Yildirim, Muhammet Fethi Gullu, Lissette Iturburu, Fahri Baran Koroglu, Remy Lesquesne, Baki Ozturk, Santiago Pujol, Julian Rincon, Chungwook Sim, Matthew Speicher

Abstract

A survey was conducted across 10 cities in Southeast Türkiye to classify damage in 242 reinforced concrete (RC) buildings constructed in the last 15 years, ranging from 2 to 16 stories. The 'robustness' of these buildings was quantified using ratios of cross-sectional areas of vertical elements (walls and columns) to floor-plan areas. The results are compared with similar measures obtained for buildings in Erzincan and Duzce (Türkiye) and buildings in Chile and Japan as well. These comparisons suggest that excessive drift was one of the primary causes of the widespread damage in RC buildings across the cities surveyed, from Antakya to Malatya. Drift a) exposed a myriad of defects in structural layouts and reinforcing detailing, b) caused nearly destruction of partitions and other non-structural building components (leading to disruptions of functionality even in the absence of structural damage), and c) induced instability even in structures with better detailing. In contrast, stiff (albeit uncommon) structures with abundant and well-distributed structural walls had lower drifts and performed well. Except for sporadic failures in details placed at critical locations, those structures are still in use and should serve as models for reconstruction.
Proceedings Title
Proceedings of the 18th World Conference on Earthquake Engineering
Conference Dates
June 30-July 5, 2024
Conference Location
Milan, IT
Conference Title
18th World Conference on Earthquake Engineering
Pub Type
Conferences

Download Paper

Local Download

Keywords

seismic, building code, damage indicator, reinforced concrete
Structural engineering, Earthquake risk reduction, Disaster and failure studies and Building codes and standards

Citation

Donmez, C. , Dowgala, J. , Eryilmaz-Yildirim, M. , Gullu, M. , Iturburu, L. , Koroglu, F. , Lesquesne, R. , Ozturk, B. , Pujol, S. , Rincon, J. , Sim, C. and Speicher, M. (2024), Lessons from the 2023 Southeast Turkiye Earthquakes: A Study on Damaged RC Buildings Considering the Hassan Index, Proceedings of the 18th World Conference on Earthquake Engineering, Milan, IT, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956965 (Accessed April 30, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 30, 2024, Updated April 17, 2025