Despite the extensive research on the seismic behavior of infilled\nframes since 1960�s, there is no general consensus towards a unified\napproach. Purpose of this study is to review the existing analytical and\nexperimental research, as well as code provisions, on masonry and on\nreinforced concrete infilled frames. The basic characteristics of infilled\nframes and how these affect seismic performance are summed up. Different\napproaches of the equivalent strut, broadly used for modeling of the infilled\nframes, are thoroughly discussed.
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