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    Investigation of Damages of Reinforced Concrete Precast Industrial Structures After 6 February 2023 Earthquakes
    (Afet ve Acil Durum Yonetimi Baskanligi (AFAD), 2023) Atar M.; Ince O.; Tas O.F.; Ozmen A.; Sayin E.
    On February 6, 2023, two devastating earthquakes occurred in Kahramanmaraş on the same day. In this study, the damages occurred in two reinforced concrete precast industrial structures after the Pazarcık (Mw 7.7) and Elbistan (Mw 7.6) earthquakes were investigated. There are different types of moment-transmitting and non-moment-transmitting connection types for precast structures in the Türkiye Building Earthquake Code (TBDY 2018), non-moment-transferring pinned connections are generally preferred in practice. Although pinned connections provide fast and practical application, they suffer brittle damages during earthquakes. In addition, there is a risk of out-of-plane collapse of the beams in these joints. In the field investigations, serious brittle damages were observed in the joints with pinned connections. When the earthquake damages are examined, it is seen that the joining methods that will provide ductile behaviour should be preferred in reinforced concrete precast structures. © 2023 AESSRA. All rights reserved.
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    Investigation of the Damage Conditions of Reinforced Concrete Buildings and Steel Structures in Malatya Province Following the February 6, 2023 Kahramanmaraş
    (Afet ve Acil Durum Yonetimi Baskanligi (AFAD), 2024) Atar M.; Ince O.; Tas O.F.; Ozmen A.; Sayin E.
    On February 6, 2023, two earthquakes with a magnitude of Mw 7.7 occurred in the Pazarcik district of Kahramanmaraş, one at 04:17 and the second one at 13:24 in the center of Elbistan, with a magnitude of Mw 7.6. These two earthquakes happened 9 hours apart and significantly affected 11 cities. In this study, the damage conditions of reinforced concrete and steel structures in Malatya province were examined following the earthquakes that occurred in Kahramanmaraş on February 6, 2023. In the field study, mostly collapsed or heavily damaged structures were examined. Topics such as structural system and irregularities, material quality and application mistakes in construction processes are discussed. The field inspection revealed significant shortcomings in the implementation of earthquake regulations. More attention should be directed towards the design of the structural system and the quality of concrete materials, including aspects such as segregation in concrete, improper aggregate geometry, and insufficient concrete cover, in the design of earthquake-resistant structures. © 2024 Afet ve Acil Durum Yonetimi Baskanligi (AFAD). All rights reserved.