Structural Performance of Steel Concrete Composite Columns of Non-Symmetric Cross Section

We confirmed the mechanical behavior of steel-concrete composite columns with symmetrical and unsymmetrical cross section through the structural tests under the constant axial force and the cyclic lateral force. The experimental parameters were as follows, axial force level and shapes of cross section. The structural tests make it clear that ultimate strength can be evaluated to superposed strength method, in which the ultimate strength of the steel section and the concrete section. However, in the case of steel-concrete composite columns with unsymmetrical cross section under the high axial compression, it was found from the tests result that ductility after the attainment of the maximum strength was small.