Seismic performance of composite reinforced concrete and steel moment frame structures using pushover analysis

Abstract

In the past decades, many studies have reported the advantages of composite Reinforced Concrete-Steel (RCS) frames, which consist of Reinforced Concrete (RC) columns and Steel (S) beams and thus are better than pure reinforced concrete (RC) and steel frames. This paper evaluates seismic performance of RCS frames based on FEMA-356 and ATC40 with plastic rotations as the acceptance criteria. The effect of joint deformations on overall behavior of RCS frames is studied through nonlinear static analysis (Pushover) in ETABS software. The behavior of three RC frames is compared with that of three RCS frames based on the same columns. The results show a great improvement on the overall behavior of RCS frames using steel beams.