通过6根GFRP管钢骨高强混凝土组合柱轴压试验,研究了GFRP管纤维缠绕角度、GFRP管厚度及内置钢骨等对组合柱的受力性能影响。试验结果表明:组合柱承载力随着GFRP管壁纤维缠绕角度的减小而增加,变化幅度相对明显,随着GFRP管壁厚度增加而增加,而GFRP管纤维缠绕角度和管壁厚度变化对内部钢骨受力影响较小。组合柱内部钢骨受混凝土约束,没有发生局部屈曲,钢骨对混凝土也有约束作用,增加了组合柱的变形能力,提高了组合柱的承载能力。根据试验研究与理论分析,建立组合柱轴心受压承载力计算公式,理论计算结果与试验结果吻合良好。 The effects of fiber winding angle, GFRP tube thickness, built-in steel and so on on the mechanical behavior of the composite columns were studied by using six GFRP pipe-reinforced high-strength concrete columns. The experimental results show that the bearing capacity of composite column increases with the decrease of fiber winding angle of GFRP pipe, and the variation range is relatively obvious. It increases with the increase of GFRP pipe wall thickness, while the fiber winding angle and wall thickness of GFRP pipe change Less affected by the force of steel. The steel inside the composite column is restrained by concrete without local buckling, and the steel is also restrained to the concrete, which increases the deformation capacity of the composite column and improves the carrying capacity of the composite column. According to the experimental research and theoretical analysis, the calculation formula of the bearing capacity of composite column axis is established. The theoretical calculation results are in good agreement with the experimental results.