NONLINEAR SEISMIC BEHAVIOR OF A RC FRAME REPAIRED BY FRP LAMINATES

Strengthening reinforced concrete (RC) frames and unreinforced masonry (URM) infill walls with fiber reinforced polymer (FRP) has been proved a very successful procedure. Although there are numerous researches on the behavior of FRP-strengthened RC columns and beams as well as URM infills, few investigations have been made on the overall effect of FRP strengthening on RC frames with URM infill walls. This paper discusses the effects of using different amounts of FRP on RC frames with various configurations including the number of stories, spans, and locations of infills and so on. The infill walls were modeled according to the equivalent strut model and the effect of strengthening was considered as a tensional strut crossing the compressive strut representing the URM infill wall. The models also were subjected to push-over loading and the improvement in their behavior is investigated.

کلیدواژه ها:

RC frames ، URM infill walls ، FRP strengthening ، push-over analysis ، story drift