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为了得到GFRP管混凝土组合长柱的轴压极限承载力计算方法,在对组合长柱的破坏特征进行分析的基础上,分别采用了钢管混凝土柱承载力计算模型和欧拉公式对GFRP套管长柱的承载力进行了探讨;总结了现有的GFRP混凝土组合短柱极限承载力的计算方法,并根据长柱的特点,引入了组合长柱承载力的稳定系数,通过对已有的组合长柱的承载力试验数据进行拟合分析,得到稳定系数与构件长径比间的线性关系,以此得到计算GFRP管混凝土长柱承载力的稳定系数法;最后通过试验比较了各方法的相对误差,其中采用稳定系数法计算的结果最为理想.
In order to obtain the calculation method of the ultimate bearing capacity of GFRP concrete long columns, the failure characteristics of the long columns were analyzed. The calculation models of the bearing capacity of CFST columns and Euler’s formula The calculation method of the ultimate bearing capacity of GFRP concrete short columns is summarized. According to the characteristics of the long columns, the stability coefficient of the bearing capacity of the long columns is introduced. Column bearing capacity of the test data fitting analysis, the coefficient of stability and the linear relationship between the components of the aspect ratio, obtained GFRP pipe long column bearing capacity of the stability factor method; and finally compared the relative error of each method Among them, the result of using the stability coefficient method is the most ideal.