1/5 Ölçekli Betonarme Çerçevelere Farklı Güçlendirme Metotları Uygulanması Üzerine Deneysel Çalışmalar

Bu deneysel çalışmada; mevcut yapıların özelliklerini yansıtacak şekilde 1/5 ölçekli, tek açıklıklı ve iki katlı 5 adet betonarme çerçeve üretilmiştir. Bu çerçevelerden 2 adedi referans numune olarak biri boş çerçeve diğeri gazbeton dolgu duvarlı olarak kullanılmıştır. Diğer üç adet betonarme çerçeve ise soğukta şekillendirilmiş çelik (CFS) duvar sistemi, betonarme dolgu duvarlı ve hem düzlem dışı betonarme duvarlı hem de betonarme kolon mantolu olarak güçlendirilmiştir. Üretilen tüm numuneler tersinir-tekrarlanır yatay yük ve sabit düşey yükleme altında test edilmiştir. Test numunelerine ait dayanım, rijitlik ve enerji tüketme kapasiteleri birbirleri ile karşılaştırılmıştır. Güçlendirilmiş numunelere ait yatay yük taşıma ve enerji tüketme kapasiteleri, referans numunelere göre daha yüksektir. Fakat soğukta şekillendirilmiş çelik (CFS) duvar sistemi ile güçlendirilen numunenin başlangıç ve maksimum yükteki rijitlik değerleri, gazbeton dolgu duvarlı (AACW) referans numuneninkinden daha düşük olmuştur.

Anahtar Kelimeler:

Deprem davranışı, Güçlendirme, Tersinir-tekrarlanır yatay yükleme, Gazbeton blok, Soğukta şekillendirilmiş çelik duvar sistemi

EXPERIMENTAL STUDIES ON 1/5 SCALED REINFORCED CONCRETE FRAMES BY USING DIFFERENT STRENGTHENED METHODS

In this experimental study; five RC frames with a scale of 1/5, single spans and two storey were produced so as to reflect the characteristics of existing structures. Two RC frames were used as the reference specimens that without an infill wall and autoclaved aerated concrete blocks (AAC) infilled wall. Three of these RC frames were strengthened as CFS (Cold Formed Steel) drywall system, infill RC shear wall and both external RC shear wall and column jacketing. All specimens produced were tested under reverse cyclic lateral loading and constant vertical loading. Strength, stiffness and energy dissipation capacities of all test specimens are compared with each other. The lateral load carrying capacity and energy dissipation capacities of strengthened specimens have occurred higher than reference specimens. But initial stiffness and stiffness at the max lateral load of specimen strengthened with CFS drywall system have occurred lower than reference specimen with AACW.

Keywords:

Seismic behavior, Strengthening, Reversed cyclic lateral loading, Autoclaved aerated concrete block, Cold formed steel wall system,

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