ABSTRACT
ABSTRACT: The finite element analysis models of Steel Reinforced Concrete (SRC) columns with different cross-section of encased steel were constructed with the aid of ABAQUS program. The load-displacement curves of the columns under monotonic loads were obtained. In addition, the effects of axial compression ratio, the steel ratio and the arrangements of encased steels on the seismic behavior of the SRC columns were investigated. The results indicate that both the axial compression ratio and the steel ratio have significant effects on the seismic behavior of SRC columns while the effect of cross-section type of encased steel is not significant. With the increase of the steel ratio, the ultimate strength of SRC columns rises up roughly linearly. The effect of the steel ratio on the ultimate strength is more apparent when the axial compression ratio remains a low level, while the influence is inconspicuous when the axial compression ratio is relative high. With the increase of the axial compression ratio, the ductility of SRC columns rises up, and the ultimate strength increases at first and then decreases.
