Performance of hydraulic structures during 6 February 2023 Kahramanmaraş, Türkiye, earthquake sequence

Date

2024-01-01

Author

Çetin, Kemal Önder
Cuceoglu, Faik
Ayhan, Bilal Umut
Yıldırım Esen, Sibel
Aydin, Seckin
Demirdogen, Sarper
Er, Yasemin
GÜRBÜZ, AYHAN
Moss, Robb Eric S

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The earthquake sequence that occurred on 6 February 2023 in Türkiye, Kahramanmaraş, had a significant impact on 140 dams, most of which are located within a distance of 50 km from surface projection of the fault rupture. These dams experienced moderate to high levels of seismic intensity, with peak ground acceleration (PGA) estimated to vary between 0.1 and 1.3 g during the Pazarcık earthquake and 0.15 to 0.45 g during the Elbistan earthquake, depending on their proximity to the fault rupture. Although all dams were able to maintain water-retaining capabilities, some of them suffered from moderate to large permanent deformations. As part of the emergency response measures, the water levels at two of these dams, namely Sultansuyu and Arıklıkaş, were lowered in a controlled manner. Following the earthquakes, a comprehensive survey of all hydraulic structures within the influence zone was conducted, and the findings are represented in this study. These findings revealed that earthfill and rockfill dams sustained more significant damage compared with concrete dams, particularly in areas close to the fault rupture, where the shaking intensity was most pronounced. The amount of permanent displacements was observed to consistently increase with the height of the dam’s transverse section.

Subject Keywords

Hydraulic structures, Kahramanmaraş earthquakes, permanent displacement, seismic performance, site reconnaissance

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85199988530&origin=inward
https://hdl.handle.net/11511/110769

Collections

Department of Civil Engineering, Article