INVESTIGATION OF CONCRETE FILLED COMPOSITE PLATE SHEAR WALLS USING FINITE ELEMENT METHODS

Öz

Concrete filled composite plate shear wall is an innovative structural lateral force resisting system that is being investigated experimentally and numerically. It consists of pre-fabricated steel web plates that are spaced parallel to each other by having regularly spaced cross-connecting tie bars (rods) which is then filled with concrete. This paper make use of previously developed numerical models and extends the study to investigate different aspects of wall behavior. In this study, two of the previously tested wall models were used to investiagete percentage of steel plate yielding at certain wall elevations per certain drift levels, steel plate von-Mises stress contours, the distribution of cracks in concrete, relative contribution of steel plates and concrete to total wall base shear and axial stress distribution of steel plate and concrete. The study assumes fixed-based walls and describes the development of finite element models using LS-Dyna.

Anahtar Kelimeler

• Steel-concrete composite structures,seismic,finite element,modeling

Beton Dolgu Kompozit Levha Perde Duvaların Sonlu Elemanlar Metodu Kullanılarak İncelenmesi

Öz

Beton dolgu kompozit levha perde duvar, deneysel ve sayısal olarak araştırılan yenilikçi bir yapısal yanal kuvvet direnç sistemidir. Önceden imal edilmiş çelik levhaların birbirine paralel yerleştirilerek bağlantı çubukları ile bağlanması ve levhalar arasındaki boşluğun beton ile doldurulması ile meydana gelir. Bu makalede, daha önce geliştirilmiş sayısal modellerden yararlanılmakta ve duvar davranışının farklı yönlerini araştırmak için çalışmayı genişletmektedir. Bu çalışmada, daha önce test edilmiş iki duvar modeli kullanılarak; belli duvar yüksekliğideki çelik levhaların belli ötelenme oranına göre akma oranı, çelik levha von-Mises gerilme dağılımları, çatlakların beton üzerindeki dağılımları, çelik levha ve betonun toplam duvar taban kesme kuvvetleri üzerindeki oransal katkıları  ve çelik levha ve betonun eksenel gerilme dağılımları incelenmiştir. Çalışmada, sabit mesnetli duvarlarlar varsayılmakta ve sonlu eleman modellerinin LS-Dyna kullanılarak oluşturulması açıklanmaktadır.

Anahtar Kelimeler

• Çelik-beton kompozit yapılar,sismik,sonlu elemanlar,modelleme

Kaynakça

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