轻型木桁架体系结构性能试验研究

Experimental Study on Light-frame Wood Truss Assemblies

为了解轻型木桁架的结构性能,完成了轻型木桁架规格材材性试验、胶合板材性试验、上弦与屋面板连接节点试验、单榀木桁架试验15榀及木桁架体系试验1组,得到了规格材材性统计特征、胶合板材性统计特征、上弦与屋面板连接节点连接特性曲线,单榀桁架的弹性刚度统计特征及轻型木桁架体系的整体共同工作性能.试验数据最终形成轻型木桁架结构性能数据库,用于后续的数值模拟程序标定工作和今后的相关研究工作参考.

This paper presented an experimental study on structural performance of wood truss assemblies. A series of experiments have been conducted, including dimension lumber properties tests, plywood tests, top chord to roof sheathing connection tests, 15 individual wood truss tests and wood truss assemblies test. The statistical characteristics of dimension lumber and plywood, as well as the elastic stiffness of individual tresses, were acquired. The assemblies test results showed that the roof system exhibit highly integrated performance. Finally, database was formed based on testing data, which will be used for calibrating numerical simulation programs and further research purpose.