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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,采用有限元法对钢管混凝土叠合柱轴压荷载-变形关系曲线进行了计算。采用数值分析方法,对叠合柱轴压工作性能进行较为细致分析,包括轴压破坏模态、轴压荷载-变形全过程关系、应力发展规律以及钢管和混凝土之间的相互作用。研究方法和结论可为相关研究参考。
In order to study the axial compressive behavior of CFST columns, the load-strain curves of CFST columns were calculated by finite element method based on reasonable constitutive model of steel-concrete columns. The numerical analysis method is used to analyze the axial compressive behavior of the laminated composite columns in detail, including the modes of axial compression failure, the whole process of axial compressive load-deformation, the law of stress development and the interaction between steel pipe and concrete. The research methods and conclusions can be used as a reference for related research.