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为合理分配钢骨-钢管混凝土组合柱的含钢量及充分发挥组合柱的受力性能,采用有限元软件ADINA数值模拟和理论分析的方法分析不同的钢管厚度、钢骨强度和混凝土强度等级对钢骨-钢管混凝土轴压组合短柱的延性性能和承载力的影响.通过分析,对延性约束指标进行了修正,同时基于回归分析建立了组合柱的承载力计算公式.研究结果表明:用ADINA软件模拟组合柱的受力性能是可行的;延性约束指标能够体现出组合柱的延性性能,为合理配置钢管和钢骨的用量提供了参考依据;建立了简洁且与试验数据吻合良好的承载力计算公式.
In order to rationally distribute the steel content of steel-concrete-filled composite columns and to fully exert the force-bearing capacity of composite columns, finite element software ADINA numerical simulation and theoretical analysis were used to analyze different steel tube thickness, steel strength and concrete strength grade pairs The ductility and bearing capacity of the short columns of steel-concrete-filled steel tube under axial compression were studied.According to the analysis, the ductility constraints were corrected and the formula for calculating the bearing capacity of the composite columns was established based on regression analysis.The results show that with ADINA The mechanical behavior of the composite column is feasible. The ductile restraint index can reflect the ductility of the composite column and provide a reference for the rational allocation of the steel pipe and the steel. The simple and reliable bearing capacity Calculation formula.