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木材的纵接方法按其接头形状有对接、指形拼接、斜面搭接以及这些方法的衍生型等3～4种。其中,对接法强度不好。而斜面搭接法由于要求楔面倾斜平缓,若要得到与普通木材差不多的强度,则木材要有板厚10倍左右的长度损失。而指形拼接法,虽在强度方面稍有不及,但接头加工时的木材损失少,尤其加工过程适于机械化,因此可以认为,这一方法今后将获得广泛推广。本文根据指形拼接的强度试验以及与以往研究结果的比较分析,得到了与指形设计有关的基本资料。
Joining method of wood according to the shape of the joints are butt joint, finger splicing, slant lap, and derivatives of these methods, such as 3 to 4 species. Among them, the docking method strength is not good. The slant lap method due to the requirements of wedge inclined gently, to get the same strength with ordinary wood, the wood thickness of about 10 times the length of the loss. The finger-splicing method, although slightly less than the strength, but the joint processing less wood loss, in particular, the process is suitable for mechanization, it can be considered that this method will be widely promoted in the future. According to the strength test of finger splicing and the comparison with previous research results, the basic data about finger design are obtained.