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为研究外部粘贴CFRP加固技术对增强结构抗剪强度的影响,制作6个抗剪强度不足的T形钢筋混凝土梁,采用不同的形式进行加固,并对其进行加载试验。试验结果表明:粘贴CFRP布能够明显地增强梁的抗剪强度;最有效的加固方式为U形缠绕并在端部进行锚固。采用美国标准和欧洲规范计算构件的抗剪强度,试验与计算结果对比得出,研究所提出的设计方法是可靠和可用的。
In order to study the effect of external bonded CFRP reinforcement technology on the shear strength of reinforced structure, six T-shaped RC beams with insufficient shear strength were fabricated and reinforced with different forms and their loading tests were carried out. The experimental results show that the shear strength of beams can be significantly enhanced by affixing CFRP cloth. The most effective reinforcement method is U-shaped winding and anchoring at the ends. The shear strength of the members was calculated by the American standards and the European norms. The results of the experiments and calculations show that the proposed design method is reliable and available.