Soil liquefaction and effects on structures; case study in Adıyaman-Gölbaşı after the 06 Feb 2023 earthquakes in Türkiye

Abstract

On 06 FEB 2023, two earthquakes occurred southeast of Türkiye; Kahramanmaraş-Pazarcık (Mw=7.8) and Kahramanmaraş-Elbistan (Mw=7.6). These earthquakes caused devastating effects in 11 cities in eastern Turkey and northern Syria. This study presents the post-earthquake discoveries in three liq-uefied areas during earthquakes and four buildings in these liquefied areas in the Gölbaşı District of Adıyaman City. First, an important role of post-earthquake piezocone penetration test (CPTu) in the characterization of subsur-face conditions and assessment of liquefaction hazard is presented. Then, the ef-fect of soil liquefaction on the performance of the buildings in these regions during the earthquake was investigated. These structures consist of 3- to 6-storys on raft foundations and exhibited various structural performances. Based on the interim findings from these areas, potential factors that cause moderate to severe damage to buildings were examined, and preliminary information on the relationship between soil properties, and the performance of buildings with shallow foundations in liquefied soil is presented.