Farklı Güçlendirme Yöntemleri Kullanılarak 1/5 Ölçekli Betonarme Çerçevelerde Kısa Kolon Davranışlarının İncelenmesi

Abstract

Bu deneysel çalışmadaki amaç, iki güçlendirme methodunda pencere boşluğunun kısa kolon davranışına etkilerini araştırmaktır. Bu çalışmada, iki katlı, 1/5 ölçekli ve tek açıklıklı yedi betonarme çerçeve üretilmiştir. Numuneler, Türkiye'de konut binalarında yaygın olarak görülen çeşitli eksiklikleri içermektedir.  Bu numuneler, sabit düşey yük ve yatay yükleme altında test edilmiştir. Birinci numune referans boş çerçeve olarak üretilmiştir. İkinci ve üçüncü numuneler gaz beton bloklu dolgu duvarlı olarak üretilmiştir. Dördüncü ve beşinci numuneler betonarme dolgu duvarları ile güçlendirilmiştir. Altıncı ve yedinci numuneler ise dıştan betonarme duvarlı ve betonarme kolon mantolu olarak güçlendirilmiştir. Tüm numunelerin duvarları, kısa kolon davranışının etkilerini araştırmak için iki farklı pencere boşluğu ile üretilmiştir. Test sonuçları göstermiştir ki, uygulanan güçlendirme yöntemleri, betonarme çerçevenin, yatay yük taşıma kapasitesini, enerji tüketme kapasitesini ve başlangıç rijitliğini önemli derecede artırmıştır. Betonarme kolon mantosu sayesinde dıştan betonarme duvarlı numunelerde kısa kolon davranışı önlenmiştir.

Keywords

• Betonarme çerçeveler,tersinir tekrarlanır yatay yükleme,güçlendirme,pencere açıklıkları,pencere açıklıkları

Investigation of Short Column Behaviors at 1/5 Scaled Reinforced Concrete Frames Using Different Strengthening Methods

Abstract

The purpose of in this experimental study is to investigate the effects of short column behavior due to window opening at two strengthening methods. At this study, seven reinforced concrete frames as two stories, 1/5 scaled and one bay were produced. The specimens contained several deficiencies that were commonly observed in residential buildings in Turkey. These specimens were tested under lateral loading and constant vertical loading. First specimen was produced as the reference bare frame. Second and third specimens were produced with infill autoclaved aerated concrete blocks wall. Fourth and fifth specimens were strengthened with infill RC shear wall. Sixth and seventh specimens were strengthened with external RC shear wall and RC column jackets. The walls of all specimens were manufactured with two different windows opening to investigate the effects of short column behavior. The test results showed that these applied strengthening methods have significantly increased the lateral load carrying and energy dissipation capacities, initial stiffness of the RC frame. Thanks to RC column jackets, at specimens with the external RC shear wall was prevented to the short column behavior.

Keywords

• RC frames,reversed cyclic lateral loading,strengthening,window openings,window openings

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