investigation of nonlinear behavior of composite bracing structures with concrete columns and steel beams (rcs) applying finite element method

The composite structural system (rcs) is a new type of moment frame, which is a combination of concrete columns (rc) and steel beams (s). these structural systems have the advantages of both concrete and steel frames. in previous research on composite structures, there are some studies regarding rcs composite connections. in this paper, the seismic behavior of the rcs composite bracing frame is inspected. in order to carry it out, nonlinear analysis of rcs composite frames with and without bracing has been operated applying finite element method (fem). behavior factors of these frames have been computed after analyzing frames. it can be observed that braces increase the yielding strength, ultimate strength, and stiffness of rcs composite frames. moreover, the comparison of analytical and experimental results reveals that the nonlinear behavior of rcs can be accurately predicted applying finite element method (fem).