Jointing Method of Structural Members in Wooden Structure

1)开发了两个自动计算木桁架构件的程序。一个是日本基础程序，另一个包括胶合板扣板连接成员的钉法。为了确定计算的实际准确性，进行了全尺寸试验。在这项测试中，它显示用CN50钉子从两侧钉入的扣板与用CN75钉子从一侧钉入并固定的扣板具有几乎相同的性能。2)采用三种指缝连接方式对锥形木结构山墙框架进行竖向荷载试验。在所有的山墙框架中，两个成员在臀部简单地用手指连接是最弱的，而那些在臀部内侧用圆角加固或在两个成员之间使用插入物的框架的刚度约为30%，比那些简单的手指连接的框架高约40%。3)建立了用逐步线性分析方法预测钉合板连接山墙框架变形的方法。此法适用于各种指甲排列。4)为有效利用小型针叶树原木，设计并试验了由锯切木材（LVL）和两层边胶合木材（llvl）成直角胶合，与梁轴或纤维板呈45度排列而成的工字梁。从试验结果来看，可以说材料的强度达到了范围和卷材的平衡。

1)Two programs for automatically calculating wooden truss members were developed. One is a Japanese-Basic program and another included the nailing method on plywood gusset plates conecting the members. To ascertain practical accuracy of the calculation ,full-scale test was carried out. In this,test,it revealed that the gusset plates nailed with CN50 nails driven from the two sides had almost equal performance of those with CN75 nails driven from theone side and clinched.2)Gable frames constructed with tapered wooden members conected using three Kinds of fingerjoint methods were tested under vertical loads. Gable frames in which two members were simply fingerjointed at the haunch were the weakest in all, and the ones stiffened with a fillet at the inside of the haunch or used the insert between the two members were about 30 percent in the stiffness and about 40 percent higher than those of the frames simply fingerjointed.3)The method of predicting deformations of gable frames jointsd with nailed-plywood gusset plates developed using a stepwise linear analysis. This method is very useful for various kinds of nail arrangement.4)For effective use of small scale coniferous logs, I-beams consisting of the franfe of sawed lumber or LVL and the wed of edgeglued two-ply lumber glued at right angle each other and arranged 45 degree to the beam axis or fiberboard were designed and tested. From the test, it may be said that a balance of the strength of materials for the frange and the web.