论文部分内容阅读
为提高木构件端部握钉性能,采用粉状碳纤维对木构件端面进行增强,研究了增强端部握钉性能。结果表明:在木构件端面复合碳纤维可有效增强木构件端部的握钉性能;木构件内部木材截面面内力学性能优于端面,采用开口方法可在一定程度上提高木构件端部握钉力;木螺钉直径越大木构件端部握钉力越大,木构件增强端部宜选用较大直径螺钉;采用碳纤维增强端面的方法可使木构件薄弱的端面获得与径向木材同等水平的握钉力,可使木构件端部十字槽头木螺钉及六角头木螺钉握钉力分别提高了24.98%和28.11%。这对木构件连接设计及安全服役具有重要的指导意义。
In order to improve the nail holding performance at the end of the wooden component, the end surface of the wooden component is reinforced by the powdered carbon fiber, and the performance of the enhanced end holding nail is studied. The results show that the composite carbon fiber at the end of the wooden component can effectively enhance the nail holding performance at the end of the wooden component. The mechanical property of the timber section inside the timber component is better than that at the end surface. Using the opening method can improve the nail holding force The larger the wood screw diameter is, the larger the nailing force of the wooden part is, and the larger diameter screw should be used for the reinforcing part of the wood component. The carbon fiber reinforced end surface can make the weak end of the wood component obtain the same level of nail holding with the radial wood Force, wood components can make the end of the cross head wood screws and hexagonal head wood screw nail grip force increased by 24.98% and 28.11%. This is of great significance to the connection design of wooden components and safe service.