GFRP管-钢管混凝土组合柱的轴压力学性能研究

Study on the Mechanical Properties of GFRP Concrete-filled Steel Tubular Composite Columns under Axial Compression

本文研究发现在GFRP管同样厚度条件下,组合柱的承载力及延性与直径正相关;GFRP管同样直径条件下,组合柱的承载力及延性与厚度正相关;GFRP管直径对组合柱轴压力学性能影响,与内管厚度关系显著。并提出适用本次试验分析的组合柱纤维模型,进行GFRP管-钢筋混凝土组合柱的变参数研究,随着管的径厚比的减小,组合柱的承载力与延性有显著提升,为类似研究提供理论参考。

In this paper,it is found that the bearing capacity and ductility of composite columns are positively correlated with the diameter under the same thickness of GFRP tubes.Under the same diameter of GFRP pipe,the bearing capacity and ductility of composite columns are positively correlated with the thickness.The diameter of GFRP tube has a significant effect on the axial pressure properties of composite columns and has a significant relationship with the thickness of the inner tube.The fiber model of composite column suitable for this test analysis is proposed,and the variable parameter research of GFRP tube-reinforced concrete composite column is carried out.With the reduction of the diameter-thickness ratio of the pipe,the bearing capacity and ductility of the composite column are significantly improved,providing theoretical reference for similar research.