Study On Seismic Behavior Of R.C. Frame Structure With Special-shaped Collum

Reinforced concrete(RC)structure with special-shaped columns, in which the conventional rectangular columns are replaced with the special-shaped columns to form an"implicit frame", is a kind of new residential structural system and has wide prospect of development.Based on the existed achievements, in the light of the feature of the special-shaped columns. The main research contents are as follows:First,Through the analysis of ductility of the specially shaped column frame structure. The limited values for the axial compression ratio of the special-shaped RC column are determined about every seismic fortification grades. Then,Through the statistic analysis for the tested data of the special-shaped columns, the limited values of the elastic and elastic-plastic interstory drifts for the RC frame or frame-shear wall structure with special-shaped columns are proposed. Finally,By finite element models of ANSYS. The elastic and plastic time-history dynamical analysis is done after seismic wave is input of the special-shaped column frame structure with bottom rectangle columns and the normal special-shaped column frame structure. Gained the seismic behaviors of the two frames.