Shahabodin Zaregarizi - Pardisan Sazeh Consulting Engineers , Tehran,Iran

A large number of reinforced concrete (R/C) framed building in Iran was constructed with unreinforced masonry (URM) infill walls and lack both strength and ductility, so there is a great need for efficient, effective and inexpensive rehabilitation strategies. In this study two techniques including shear walls and concrete infills was used for rehabilitation of a five story reinforced concrete building with URM infill walls and effectiveness of each method was studied through static nonlinear analysis. The results of analysis are discussed in case of pushover curves, plastic hinge mechanism and interstory drift. Result of this study also can be used for choosing an appropriate rehabilitation method for low and medium-rise buildings.

Masonry infill, Concrete infill, Shear wall, Rehabilitation, RC building