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基于碳纤维增强复合材料(CFRP)约束的梁端混凝土加腋区,CFRP-梁端加腋组合方法可大幅度扩展节点刚性域范围,适用于受剪性能严重不足的梁柱节点加固。考虑到节点受力的复杂性,在前期试验验证的基础上,采用有限元仿真分析方法以进一步明确加固节点的受剪性能与工作机理,以及不同加固构造对加固效果的影响规律。在此基础上,建立了CFRP-梁端加腋组合方法加固节点的压杆-拉杆受力分析模型。
The CFRP-beam-end concrete plus axillary area and CFRP-beam plus axillary combination method can greatly expand the range of node stiffness domain, which is suitable for the strengthening of beam-column joints with serious insufficient shear performance. Taking into account the complexity of the node force, on the basis of the previous experimental verification, finite element simulation analysis method is used to further clarify the shear performance and working mechanism of the reinforced joints, as well as the impact of different reinforcement structures on the reinforcement effect. On this basis, the stress-pull analysis model of CFRP-reinforced joints strengthened with beam end plus axillary method was established.