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采用纤维模型对一个钢管混凝土组合柱进行了极限承载力分析,计算并比较了各种轴压比下钢混组合柱的滞回性能,得到了抗震较为理想的轴压比。结果表明,纤维截面单元能用较小的计算代价获得与规范相近的计算结果。
The ultimate bearing capacity of a concrete-filled steel tubular column with fiber model was analyzed by fiber model. The hysteretic behavior of the steel-plastic composite column under various axial compression ratios was calculated and compared. The ideal axial compression ratio was obtained. The results show that the fiber cross-section element with a smaller computational cost to obtain similar results with the specification.