Jointing Method of Structural Members in Wooden Structure

点击翻译按钮获取中文摘要

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.