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为研究内配方钢管的钢管混凝土叠合柱轴压工作性能,基于合理的钢材和混凝土材料本构关系模型,采用纤维模型法对叠合柱轴压荷载-变形关系曲线进行了计算。采用该数值分析方法,对叠合柱轴压性能进行了参数分析,建议了这类叠合柱的轴压强度承载力实用计算公式。本文研究结论可为相关研究提供参考。
In order to study the axial compressive behavior of CFST columns with steel tubes, a fiber model was used to calculate the axial load-deflection curve of the composite columns based on a reasonable constitutive model of steel and concrete. The numerical analysis method is used to analyze the axial compressive properties of the laminated composite columns. The practical calculation formula of the axial compressive bearing capacity of the composite columns is proposed. The conclusion of this paper can provide reference for related research.