This paper addresses the assessment of timber-to-timber dowel-type joints in double shear, reinforced with self-tapping screws (STS). This type of joint is known to be less prone to brittle failure as the screws tend to increase the embedding strength while preventing premature splitting. This theory was tested through an experimental campaign carried out for joints of maritime pine (Pinus pinaster Ait.) and Scots pine (P. sylvestris L.). Monotonic and cyclic tests were performed, with and without reinforcement, and the results were analysed. The results highlight the effectiveness of the reinforcement in preventing premature splitting while increasing the capacity of the joints to sustain higher displacements. The contribution of STS was more evident in the fully reversed cyclic tests, where the reinforcement played a crucial role in increasing the ductility and energy dissipation. The use of STS, perpendicular to the dowel, allows the reinforcement of dowelled joints with insufficient end distances.

中文翻译：

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用自攻螺钉加固销钉式木节

本文介绍了用自攻螺钉（STS）加固的双剪切木材对木材榫钉式连接的评估。已知这种类型的接头不太容易发生脆性破坏，因为螺钉往往会增加包埋强度，同时又能防止过早的开裂。这一理论是通过对海岸松的接头进行的实验系列（测试松松树艾特。）和欧洲赤松（P.樟子松大号。）。进行了单调和循环试验，有或没有加强筋，并对结果进行了分析。结果突出了加强筋在防止过早断裂的同时增加了关节承受更大位移的能力的有效性。在完全逆向循环试验中，STS的作用更加明显，在这种试验中，钢筋在增加延展性和耗能方面起着至关重要的作用。垂直于销钉的STS的使用可以在末端距离不足的情况下加强榫槽连接。