Steel plate bolted connections are frequently used in timber structures. However, these connections may incur durability problem due to the corrosion of the steel plates. This paper proposes using GFRP plate to replace steel plate in timber connections to mitigate the corrosion issue. The group effect of the proposed GFRP-timber bolted connection is studied. Tensile tests of GFRP-timber bolted connections were conducted considering a number of variables including bolt diameter, bolt pitch distance, bolt row number, bolt column number. The failure modes and the load–displacement curves of the connections were reported. Experimental results showed that the group effect of the GFRP-timber bolted connection is strongly affected by the bolt diameter and number of bolts, but little affected by bolt pitch distance. The effect of the number of bolt columns on the group effect was also discovered and quantified. The design equation of the timber bolted connection in Eurocode 5 was modified considering the effects of various parameters. The modified equation was then verified using the experimental data in this paper. Finally, detailed recommendations were provided for the design of the proposed GFRP-timber bolted connection.

钢板螺栓连接常用于木材结构。然而，由于钢板的腐蚀，这些连接可能引起耐久性问题。本文提出用GFRP板代替木材连接中的钢板以减轻腐蚀问题。研究了建议的GFRP-木材螺栓连接的群效应。考虑到许多变量，包括螺栓直径，螺栓节距，螺栓行数，螺栓列数，对GFRP-木材螺栓连接进行了拉伸试验。报告了连接的失效模式和载荷-位移曲线。实验结果表明，GFRP-木材螺栓连接的群效应受螺栓直径和螺栓数量的影响很大，而不受螺栓间距的影响很小。还发现并量化了螺栓柱数对群效应的影响。考虑到各种参数的影响，对Eurocode 5中的木材螺栓连接的设计方程进行了修改。然后使用本文的实验数据验证了修改后的方程。最后，为建议的GFRP-木材螺栓连接的设计提供了详细的建议。