Study on shear strength and stiffness of roof diaphragm in Wooden post and beam construction

本研究的目的是明确木质臀部屋面结构作为横隔层的抗剪机理。实验参数为屋面形状、梁火焰长度比、屋面坡度、是否安装屋檐紧固件。测试得到了荷载-位移曲线的数据，并由这些数据计算出以横隔板为单位的比例值。实验值与有限元模型的值接近1/60rad的位移度。如果将每个关节中的弹簧模型用数学形式表示，就可以得到设计公式。

The objective of this study is to clear the share resist mechanism of wooden hip roof structure as diaphragm. The experimental parameters were roof figure, beam flame length ratio, gradient of roof and with/without rafter fastener. We tested and got data of load-displacement curves, calculated the specific values as diaphragm from those data. The experimental values corresponded with the FEM model's values approximately to 1/60 rad displacement degree. If we express the spring model in each joint as mathematically, the design formula would be obtained.