Betonarme Perde Duvarların Farklı Plastik Mafsal İlişkilerine göre Deplasman Davranışlarının Araştırılması

Bu çalışmanın amacı, sismik bölgelerde bulunan dikdörtgen en-kesitli süneklik düzey yüksek betonarme perde duvarlar için plastik mafsal uzunluğunu ve yük-tepe deplasman ilişkisini araştırmaktır. Sismik tasarım ile ilgili plastik mafsal uzunlukları için; literatürde önerilen bağıntılar ile mevcut yönetmeliklerde verilen koşullar kullanılmaktadır. Betonarme perde duvarların tepe yük-deplasman ilişkisinin yatay yükler altındaki plastik mafsal bölgelerinde değerlendirilmesi için analitik çalışma yapılmıştır. Plastik mafsal boyu olarak adlandırılan plastik şekil değiştirme bölgesinin uzunluğu bu çalışmada farklı yönetmelikler ve araştırmacılar tarafından önerilen bağıntılar dikkate alınarak araştırılmıştır. Tasarlanan betonarme perde duvarlarda plastik mafsal modelleri için farklı araştırmacılar tarafından ve yönetmeliklerde önerilen bağıntılar araştırılarak kesit geometrisi ve detaylarına göre plastik mafsal uzunlukları elde edilmiştir. Daha sonra farklı bağıntılardan elde edilen plastik mafsal uzunluklarına göre betonarme perde duvarların akma yer değiştirme ve plastik yer değiştirme değerleri hesaplanarak perde duvarların toplam tepe deplasman değerleri elde edilerek karşılaştırılmıştır. Bu çalışmanın sonucu, plastik mafsal uzunluğunun betonarme perde duvarların yer değiştirme ve deplasman süneklik değerlerinde önemli bir etkiye sahip olduğu göstermiştir. Plastik mafsal yüksekliğini etkileyen en önemli parametre betonarme perde duvarların boyutlarıdır.

Anahtar Kelimeler:

Plastik mafsal, Sismik yük, Perde duvar, Tepe deplasman, Kritik bölge

Investigation of Displacement Behavior of Reinforced Concrete Shear Walls with Different Plastic Hinge Relationships

The aim of this study is to investigate the plastic hinge length and peak displacement relationship for rectangular cross-sectional high ductile concrete shear walls in seismic zones. For plastic hinge lengths related to seismic design; the conditions given in the current regulations are used in the literature. An analytical study was conducted to evaluate the peak displacement relationship of reinforced concrete shear walls in seismic loads under plastic hinge regions. The length of the plastic deformation zone called the plastic hinge length has been investigated in this study by considering the regulations proposed by different regulations and researchers. Plastic hinge lengths of the designed reinforced concrete shear walls were calculated by plastic hinge models proposed by different researchers and regulations. Then, according to the plastic hinge lengths obtained from different relations, the yield displacement and plastic displacement values of the reinforced concrete shear walls were calculated and the total peak displacement values of the shear walls were obtained. The results of this study indicated that increase in plastic hinge length has a significant effect on the displacement and displacement ductility values of reinforced concrete shear walls. The most important parameter affecting the plastic hinge length is the dimensions of the reinforced concrete shear walls.

Keywords:

Plastic hinge, Seismic load, Shear wall, Peak displacement, Critical zone,

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