Abstract
To study the antiseismic performance of the cross section steel special-shaped column, the author builds three groups of model with seven components by using ANSYS10.0 and presents the stress and deformation form, failure modes, hysteretic curves, skeleton curves and stiffness degradation of the components. In the light of the analysis on how axial compression ratio, flange depth-thickness ratio and web depth-thickness ratio affect the anti-seismic performance, it is concluded that: with the increase of the axial compression ratio, indicators such as hysteretic behavior and ductility performance index decrease. Taking into consideration of various elements, in the antiseismic design of the cross section steel column, it is appropriate to set the axial compression ratio to 0.4 or so.
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