Effect of unreinforced masonry infill walls with and without ECC layer performance of R.C framed structure

Reinforced concrete infilled-frames (IF) are commonly used in buildings in the world nowadays. They are often built schools, offices, dwellings, and hospitals, and other kinds of residential and public buildings. The infilled is generally considered a nonstructural element and is ignored in design and analysis despite his strong interaction with the bounding RC frame. Recently, the engineered Cementitious Composite (ECC) layer is utilized to improve the behavior of numerous structural elements. In this research, the behavior of infilled frames are inspected through studying four frame models; bare frame (BF) as a control model, infilled-frame (IF), infilled-frame provided with a single layer of ECC (SIF), and infilled-frame provided with double layers of ECC (DIF). Verification studies are performed on one previous experimental works through nonlinear pushover analysis. The analysis showed that providing the infilled-frame models with the ECC layer increases its capacity.