Behavior of geogrid-reinforced concrete slabs subjected to contact explosions

Abstract

Bomb attacks are occurring in the world due to the increasing hot and cold wars. In this study, the contact explosion, which affects the resistance of the structure the most, was investigated among these attacks. Since the explosive is in contact with the surface of the structure in contact explosion, the reaction of the structure in bending and shear behavior due to sudden dynamic loading differs from other loads. In our experimental study, 50x50x15 cm reinforced concrete slabs reinforced with steel wire mesh, wire fence and geogrid building materials were produced in order to compare the behavior of concrete against explosion. In contact with these plates, 577 gr explosive was applied and detonated. In the experiments, the contact explosion reactions of geogrid reinforced concrete and steel-reinforced concrete and unreinforced concrete were compared. As a result of the experiments, it was determined that the concrete reinforced with wire fence and geogrid is applicable against contact explosion

Keywords

• Contact explosion
• Geogrid
• Steel wire mesh
• Steel wire fence.

Geogrid takviyeli beton döşemelerin temas patlamasına karşı davranışının araştırılması

Öz

Dünyada gittikçe artan sıcak ve soğuk savaşlardan kaynaklı bombalı saldırılar meydana gelmektedir. Çalışmamızda bu saldırılar içerisinde yapının direncini en fazla etkileyen temas patlaması araştırılmıştır. Temas patlamasında patlayıcı yapı yüzeyi ile temas halinde olduğu için ani dinamik yüklemeden dolayı yapı eğilme ve kesme davranışında gösterdiği reaksiyonlarda diğer yüklemlere göre farklılık göstermektedir Patlama olayında bir mühendislik yapısının göstereceği hasarı azaltmak için hem dayanıklılık hem de ekonomik performansı göz önüne almak gereklidir. Yaptığımız deneysel çalışmada betonun patlama karşısındaki davranışlarını kıyaslamayabilmek için hasır çelik, telçit ve geogrid yapı malzemeleri ile güçlendirilmiş 50x50x15 cm BA plaklar üretilmiştir. Bu plaklara temas halinde 577 g patlayıcı uygulanarak patlatılmıştır. Deneylerde geogrid takviyeli beton ile çelik donatılı beton ve donatısız betonun temas patlaması reaksiyonları ile karşılaştırılmıştır. Yapılan deneyler sonucunda telçit ve geogrid ile güçlendirilmiş betonun temas patlamasına karşı uygulanabilir olduğu belirlenmiştir.

Anahtar Kelimeler

• Temas patlaması
• Geogrid
• Hasır çelik
• Telçit.

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