Developmental Research on Wood Structure for Machine-Precutting System

本研究的目的是提出一种新的结构的木制框架的机器预切割系统最近开发。本研究沿着以下三个步骤1至3.1的路线进行。新结构节点的调查与选择：首先根据现有文献资料，对节点种类的数量、分类标准、分类实例、木材加工特点等进行了调查。然后对新结构中采用的节点形式进行了分析，得出榫卯和燕尾两种节点形式最符合要求.第一项所选节点的性能：在多种类型的榫卯和燕尾榫节点中，选取了两种具有代表性的节点，通过拉、压、剪试验，明确了它们的强度性能、工作性能和节点刚度系数.介绍了一种新的结构及其在木结构房屋模型中的应用：从上述研究中得出了新的木结构构造的基本概念，即节点种类的简单性，传统框架的继承，但更多地使用上述两种类型的节点，以及结构分析中的半刚性节点分析。然后，他们被证明是有用的，在设计的木屋，我们的目标。

This research has an object to present an innovative structure of wooden frameworks for the machine-precutting systems recently developed. The research has carried out along the line of the following three steps 1 to 3.1. Investigations and selection of joints for the new structure: Being based on the data of existing literatures, number of joints sorts, classification criteria, examples of classification, characteristics of wood working, etc. were investigated at first. Then we could present the requisites for the joints as newly adopted in the innovative structure, and concluded that two joints of tenon & mortise and dove tail were the most appropriate to the requisites.2. Performances of the joints selected in the term 1: Among many types of tenon & mortise and dove tail joints, two representative types were selected, and their strength properties, workability, and coefficients of joint rigidities were clarified by the experiments in tension, compression, and shear.3. Presentation of an innovative structure and its application to a model of wooden houses: Basic concepts for the constitution of a new wooden structure were derived from the above investigations, namely, simplicity of the joints sorts, the succession of the traditional framework in essential, but much use of the two types of the joints above described, and semi-rigid joint analysis in structural analysis. Then they were proved to be useful in the design of a wooden house we aimed at.