木材工业2018，Vol.32Issue(3)：1-4,4.DOI:10.19455/j.mcgy.20180301
国产日本落叶松正交胶合木抗弯弹性模量评价方法
Evaluation Methods of Bending MOE of Cross-Laminated Timber Made from Domestic Japanese Larch Lumber
摘要
Abstract
Domestic Japanese larch lumber was used to prepare cross-laminated timber (CLT) samples. Modulus of elasticity (MOE) was tested using a static method and longitudinal vibration. Shear analogy was also used to predict effective bending stiffness. Feasibility and accuracy of nondestructive testing technology and theoretical calculation were analyzed. Testing results showed that: 1) MOE was improved by increasing the span/depth ratio and should be more than 24; 2) Dynamic MOE was higher than static MOE with less than 10% of relative error; 3) Effective bending stiffness of the CLT samples was predicted by shear analogy with less than 5% of relative error between predicted and measured values.关键词
正交胶合木/抗弯弹性模量/跨高比/无损检测/剪力类比法Key words
cross-laminated timber/MOE/span/depth ratio/nondestructive testing/shear analogy method分类
农业科技引用本文复制引用
龚迎春,田兆鹏,徐俊华,武国芳,任海青..国产日本落叶松正交胶合木抗弯弹性模量评价方法[J].木材工业,2018,32(3):1-4,4.基金项目
国家重点研发计划"绿色建筑及建筑工业化"(2017YF C0703501). （2017YF C0703501）
