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通过数字分析,研究轴向和循环荷载作用下夹角对采用碳纤维复合包裹的钢筋混凝土梁柱节点的剪力和延性的影响。对于梁柱节点,建立了三维非线性有限元模型并采用Marc.MentatTM2001有限元分析软件进行模拟。采用已有文献中纤维增强复合材料包裹梁柱节点试验研究所提供的资料,对有限元模型的精度进行评估。用有限元方法分析不同夹角配置的碳纤维增强复合聚合物包裹加固的3个梁-柱节点的性能。分析结果显示:与水平轴成±45°,连续4层包裹纤维增强复合聚合物,对于提高轴向和循环荷载组合下梁-柱节点的剪力和延性,是最好的设计方案。
Through numerical analysis, the influence of the included angle under axial and cyclic loads on the shear and ductility of RC beam-column joints with carbon fiber composite was studied. For the beam-column joints, a three-dimensional nonlinear finite element model was established and simulated by Marc. Mentat TM2001 finite element analysis software. The accuracy of the finite element model was evaluated by using the data provided in the experimental study of the beam-column joints of fiber-reinforced composite materials wrapped in the literature. The finite element method was used to analyze the performance of three beam-column joints reinforced with carbon fiber reinforced polymer with different included angles. The results show that the fiber reinforced composite polymer with 4 continuous layers wrapped with ± 45 ° to the horizontal axis is the best design scheme for improving the shear and ductility of the beam-column joints under axial and cyclic loading.