Shear Failure of Concrete Columns because of Interaction with Masonry Infill

Infill walls are one of the most important elements in the buildings that should be considered in design and construction stages. In architectural design masonry infills are used to separating spaces and areas, but these elements are effective in seismic behavior because of stiffness and strength of masonry infills adjacent to the structural frames. The interaction of masonry infill with concrete frame create short column. Shear failure is a critical kind of concrete column failure that occurs in short columns during earthquake because of low ductility and brittle behavior of these types of columns. It is important to investigate the behavior of short columns. In this paper interaction of masonry infill with concrete frame with 1 bay and 1 story is surveyed. SAP2000 and OpenSees are used for analysis and comparison. The results show that shear reinforcement of concrete columns in ordinary design is not sufficient so plastic hinges form and shear failure happen and increasing in the stiffness and strength of frame because of infill wall should be considered during both the design and construction stages.