Title:
2023 Turkey-Syria Earthquakes: Observations on Reinforcement Detailing
Author(s):
Lequesne
Publication:
Web Session
Volume:
ws_F23_Lequesne.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/29/2023
Abstract:
ACI Committee 133 led a team of researchers and engineers to survey reinforced concrete buildings damaged in the Pazarcik (Mw7.7), Elbistan (Mw7.6), and Yayladagi (Mw6.4) earthquakes that struck Turkey and Syria in February 2023. The team, comprised of ACI members and collaborators from Turkey and the surrounding region, surveyed hundreds of buildings in ten cities in south-central Turkey. Most buildings surveyed were multi-story apartment buildings with reinforced concrete frame-wall systems, though the survey also included “tunnel-form” buildings that are comprised mostly of reinforced concrete walls and slabs. The presentation will describe reinforcement details that were commonly observed in damaged members, including widely spaced transverse reinforcement, “dog-leg” bends in longitudinal bars at the base of columns and walls, and lap-spliced column and wall longitudinal bars. The presentation will highlight reinforcement details in damaged members that are, or arguably are, permitted in ACI 318-19. These include inadequately confined beam and column longitudinal bars in joints when the members are not designated as part of the lateral force resisting system.