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在已有试验研究基础上,借助有限元分析软件,选取合理材料本构关系,建立FRP约束钢管混凝土柱在轴心压力作用下的非线性有限元计算模型,得出试件极限承载力。与试验结果进行比较,结果表明,有限元计算的极限承载力和荷载-应变曲线与试验结果吻合较好,验证了有限元分析模型的可行性。
Based on the existing experimental research, the finite element analysis software was used to select the constitutive relation of rational material, and the nonlinear finite element model of FRP confined steel tube concrete column under axial pressure was established. The ultimate bearing capacity of the specimen was obtained. Compared with the test results, the results show that the ultimate bearing capacity and the load-strain curve of the FEM are in good agreement with the experimental results, and the feasibility of the finite element analysis model is verified.