Betonarme Perde Duvarların Farklı Plastik Mafsal İlişkilerine göre Deplasman Davranışlarının Araştırılması

Yıl 2019, Cilt: 1 Sayı: 2, 196 - 211, 15.12.2019

Saeid Foroughi , Süleyman Bahadır Yüksel

Öz

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

Öz

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.

Anahtar Kelimeler

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

Kaynakça

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