Experimental study on the seismic behavior of steel reinforced concrete columns

In order to study the seismic behavior of steel reinforced concrete (SRC) columns, eight cross-shaped SRC columns with a span ratio of 3 were tested under low cyclic reversed loading. The influence of volume-stirrup ratio on the seismic behavior of SRC columns was discussed by analyzing the failure patterns, hysteresis loops, skeleton curves, ductility coefficients and energy dissipation capacities of such members. A formula between ductility and volume-stirrup ratio of SRC columns was put forward by fitting the experimental data. The test results confirm that the seismic behavior of cross-shaped SRC columns is good. The volume-stirrup ratio is an important influencing factor on ductility of the members, in favor of improving the seismic behavior of members significantly.