木结构双自攻钉协同抗拔力试验研究

Test Studies on Wooden Double-tapping Screw Pullout Coordination

为了研究木结构中的自攻钉的抗拔性能,选用中国产普通圆钉、进口规格木材和普通木材,制作了6个木结构剪力墙中钉连接的试件,采用单调加载方式进行试验研究,结果表明普通圆钉连接强度主要取决于破坏模式;契入效应不足明显影响钉连接的强度;钉连接刚度离散性较大;故而通过进一步的试验研究,得出中国产自攻钉抗拔连接强度和刚度计算公式,将是十分必要的。

In this paper,the experimental study on the self-tapping screw's pullout resistance in the wood structure was conducted.Domestic ordinary screws were used together with imported or domestic wood to fabricate 6 screw connection specimens in wooden walls.Then monotonic loading tests were conducted and it can be concluded that,the common round screw connection strength mainly depends on the failure mode,the lack of cooperation effect significantly influences the strength of screw connections,and the dispersion of screw connection stiffness is high.So,to obtain formulae for the self-tapping screw connection strength and stiffness by further experimental study will be very necessary.