Modeling for seismic analysis of SRC columns in New CCTV Building

This paper presented the load-carrying performance of the SRC (steel reinforced concrete) columns in New CCTV Building, and established the SRC model for seismic analysis on the basis of available functions of FEA software SAP2000. In this paper, the load-carrying capability of the high steel ratio SRC columns in New CCTV Building was investigated after summarizing the existing research results. And further the yield surface and basic post-yielding characteristic of the SRC columns were obtained and plastic hinge element based on elasto-plastic model was established for anti-seismic analysis. With this understanding and conclusions derived from current experiments, the present study employed Pivot Hysteresis Model to stimulate the hysteretic behavior of the SRC columns and seted up NLink element based model. Furthermore, some verification examples were carried out and they demonstrate accuracy of the two models. Discussion on applicability of the two models was made and it indicated the models, which were proposed in this paper, can efficiently and accurately stimulate the anti-seismic load-carrying performance of the SRC columns in FEM analysis.