A new wood-framed construction based on the simplification of joints sorts.

1.研究目的：本项目的目的是提出一种新型的木结构框架结构，并研究该结构的结构特点。得到的结果：(1)施工原则：采用燕尾或燕尾加卡箍的方式施工。然而，应避免成员在一个节点(空间)处过度重复。(2)实际施工预制：为加强节点，采用搭接燕尾节点，节点长度大于杆件宽度的一半。要在节点处复制的成员的数量被设置为两个。在此条件下，设计了平面(2.73x0.80x1.10(M))和实体(1.6x0.90x0.75(M))框架模型，并实际制作了窑干西部铁杉。(3)力学性能的阐明：对上述模型进行了水平方向上施加循环荷载或斜坡荷载的试验。平面框架的刚度随着柱数的增加而增加，随着节点金属的使用而增加。实心框显示的倍增率为0.5-0.8个/壁。对模型进行半刚性结构分析的结果与试验结果吻合较好，这些结果描述在与本项目相同的标题下发表的报告中。

1. Purpose of research : The purpose of this project is to present a new type of wood framed construction, and to investigate structural characteristics of the purposed construction.2. Obtained results : (1) Construction principle : A dovetail or both of it and a tenon is to be used for the construction. However, an excessive duplication of the members at one nodal point (space) is to be avoided. (2) Presetation of actual constructions : The dovetail joint with lap is adopted, and its length is longer than a half of the breadth of the members in order to strengthen the joint. The number of members to be duplicated at a nodal point isset to two. Under these conditions both the plane (2.73x0.80x1.10 (m)) and the solid (1.6x0.90x0.75 (m)) frame models were designed, and actually made of kiln-dried western hemlock. (3) Clarification of mechanical performances : The models above were tested by applying cyclic or ramped load in the horizontal direction. The stiffness of the plane frame was increased with the increase of number of columns two to four, and with the use of joint metals. The solid frames indicated the values of the multiplying rate 0.5-0.8/wall. The results of the application of the semi-rigid structural analysis to the models showed good agreements with the experimental.These results obtained are described in the report published under the same title as that of this project.