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为了深入理解纤维锚具对纤维增强复合材料(简称“复材”)与混凝土界面黏结性能的影响,对梁底面黏结碳纤维复材的13根预置裂缝梁进行了试验,研究了锚具样式、锚具纤维用量及锚具分布三个因素对碳纤维复材与混凝土界面黏结性能的影响。试验结果表明:不同锚具样式中刚性锚具的锚固效果优于柔性锚具,且前者可更有效提高碳纤维复材的材料利用率;增大锚具纤维用量及布置多个锚具均可提高碳纤维复材与混凝土的界面黏结能力,有效约束裂缝张开位移;锚具布置位置距碳纤维复材自由端过近将影响锚具和碳纤维复材与混凝土黏结界面的协同受力,降低锚具的锚固效果,因此该距离不宜小于碳纤维复材的有效黏结长度。
In order to understand the influence of fiber anchorage on the bond behavior between fiber reinforced composites and concrete, 13 prefabricated beams with bonded carbon fiber composites on the bottom of the beam were tested. Influence of Three Factors on the Bonding Properties of Carbon Fiber Reinforced Polymer and Concrete Interfaces by Using Three Styles, Styles, Anchorage Fiber Amount and Anchorage Distribution. The experimental results show that the anchoring effect of rigid anchors in different anchorage styles is better than that of flexible anchors, and the former can effectively improve the material utilization rate of carbon fiber composite materials. The increase of anchor fiber consumption and the arrangement of multiple anchors The interfacial bonding ability between carbon fiber composite material and concrete effectively restrains the open displacement of the crack. The arrangement position of the anchor is too close to the free end of the carbon fiber composite material, which will affect the coordination force between the anchorage material and the carbon fiber composite material and the concrete bonding interface, Anchoring effect, so the distance should not be less than the effective bond length of carbon fiber composite material.