Abstract An experimental investigation of the load-bearing behavior and ductility of FRP hybrid double-lap joints composed of both adhesively-bonded and bolted connection parts was conducted. Amongst other things, the effects of the adherends’ fiber architecture (uni- or multidirectional), adhesive type (stiff or flexible), and displacement rate were examined. The resistances of the hybrid joints with flexible adhesive corresponded to the full summation of the resistances of the bonded and bolted connection parts. The ultimate failure loads of these joints were furthermore significantly improved by increasing the displacement rate, while the deformation capacity did not decrease. The hybrid joints with multidirectional adherends and flexible adhesive exhibited high joint efficiencies and excellent ductility and thus may increase the overall safety of redundant engineering structures composed of brittle FRP members. These joints may also fulfill fail-safe conditions as required in European standards.

中文翻译：

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FRP复合材料混合节点的阻力和延性

摘要 对由粘接连接件和螺栓连接件组成的玻璃钢混合双搭接接头的承载性能和延性进行了试验研究。此外，还检查了被粘物的纤维结构（单向或多向）、粘合剂类型（刚性或柔性）和位移率的影响。带有柔性粘合剂的混合接头的电阻对应于粘合和螺栓连接部件的电阻的完整总和。通过增加位移率，这些接头的极限破坏载荷进一步显着提高，而变形能力没有降低。具有多向被粘物和柔性粘合剂的混合接头表现出高接头效率和优异的延展性，因此可以提高由脆性 FRP 构件组成的冗余工程结构的整体安全性。这些接头还可以满足欧洲标准中要求的故障安全条件。