CFRP布约束混凝土矩形短柱轴压性能的非线性有限元分析

Nonlinear FEM Analysis of CFRP Sheet Confined Rectangle Concrete Short Columns under Axial Compression

采用通用有限元软件Abaqus,对轴心受压状态下碳纤维增强复合材料(carbon fiber reinforced ploymer,CFRP)布约束的混凝土矩形短柱的力学性能进行分析.计算结果与实验结果吻合较好,表明建立的有限元模型能够较好地模拟CFRP布约束的混凝土矩形短柱的轴压受力变形全过程.最后,探讨了CFRP布层数、倒角半径、截面长宽比和混凝土强度对约束混凝土强度的影响.

Using the universal finite element software Abaqus, the mechanicM behavior of carbon fiber reinforced ploymer （CFRP） sheet confined rectangle concrete short columns with corners under axial compression is analyzed. Results of nonlinear finite element method （FEM） analysis are in good agreement with experimental results, indicating that the finite element model established in this paper can well simulate the behavior of CFRP sheet confined rectangle concrete short columns with corners under axial compression. By using the finite element model, the influence of CFRP sheet layer, corner radius, section aspect ratio and concrete strength on the strength of confined concretes is studied.