竹/木销连接组合木梁抗弯性能研究

试验对竹/木销连接的双层规格材组合木梁进行四点弯曲加载试验。试验参数包括销的种类(竹销和木销),钉入角度(45°、60°、90°)和竹销直径(8、10、12 mm)。结果表明,90°和60°角连接时,竹销连接组合木梁刚度比木销连接分别提升11%和18%;组合木梁随销钉入角度的增加,刚度逐渐增加,90°角连接比60°和45°角连接刚度分别提升7%和29%;增加竹销直径可以有效提升组合木梁刚度。

Bending Performance of Timber Composite Beam Fastened with Bamboo/Wood Dowels

Four-point bending tests were carried out on double-layer timber composite beams fastened with bamboo and wood dowels.The connection parameters included the types of dowels(bamboo dowels and wood dowels),the connection angles(45,60,and 90°)and the diameter of the dowels(8,10,and 12 mm).The results showed that the stiffness of the composite beams using bamboo dowels increased by 11%and 18%compared with wood dowel connection when connected at 90°and 60°,respectively;the stiffness of composite beams increased gradually with the increase of dowel connection angle,and the stiffness of 90°connection increased by 7%and 29%compared with 60°and 45°connection,respectively;the increase of bamboo dowel diameter could also effectively improve the stiffness of composite beams.