南京林业大学学报(自然科学版) ›› 2005, Vol. 29 ›› Issue (06): 99-102.doi: 10.3969/j.jssn.1000-2006.2005.06.025

• 研究论文 • 上一篇    下一篇

竹材增强杨木单板层积材冲击性能的研究

朱一辛,关明杰,张晓冬   

  1. 南京林业大学竹材工程研究中心, 江苏 南京 210037
  • 出版日期:2005-12-18 发布日期:2005-12-18

Studies on Impact Performance of Bamboo Strengthened Laminated Veneer Lumber of Poplar

ZHU Yi xin, GUAN Ming-jie, ZHANG Xiao-dong   

  1. Bamboo Engineering Research Centre Nanjing Forestry University, Nanjing 210037, China
  • Online:2005-12-18 Published:2005-12-18

摘要: <正>建立了速生杨木单板面内纵横向剪切模量预测模型,分析了压缩率和含胶量对速生杨木单板面内纵横向剪切模量的影响,以及单板面内纵横向泊松比的范围。结果表明:当涂胶量体积大于单板裂隙体积时,预测值和试验值之间平均相对误差为20%。

Abstract: This paper dealed with the feasibility of increasing the impact of poplar laminated veneer lumber by adding bamboo veneer into to the configuration of LVL. The results showed that bamboo could obviously enhance the impact performance of LVL compared with pure poplar LVL. When bamboo was put on the two surface of LVL sandwich and in the middle of that, the impact toughness increased 30.4% and 27.3% respectively. As well as energy Wt went up 31.70,/00 and 28. 1%. While crack forming energy Wi slightly increased 7.2% and 12.8% respectively. Crack propagation energy Wp increased 40.9% and 43.4% with ductility index increasing 27.2% and 31.5%.

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