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[1]王志强,付红梅,罗欢,等.速生杨木横向层正交胶合木滚动剪切性能[J].南京工业大学学报(自然科学版),2016,38(05):116-120.[doi:10.3969/j.issn.1671-7627.2016.05.019]
 WANG Zhiqiang,FU Hongmei,LUO Huan,et al.Planar shear properties of fast-growing poplar in hybrid cross laminated lumber[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(05):116-120.[doi:10.3969/j.issn.1671-7627.2016.05.019]
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速生杨木横向层正交胶合木滚动剪切性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年05期
页码:
116-120
栏目:
出版日期:
2016-09-28

文章信息/Info

Title:
Planar shear properties of fast-growing poplar in hybrid cross laminated lumber
文章编号:
1671-7627(2016)05-0116-05
作者:
王志强付红梅罗欢董惟群骆嘉言卢晓宁
南京林业大学 材料科学与工程学院,江苏 南京 210037
Author(s):
WANG ZhiqiangFU HongmeiLUO HuanDONG WeiqunLUO JiayanLU Xiaoning
College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China
关键词:
速生杨木 横纹压缩改性 浸渍酚醛树脂改性 正交胶合木 滚动剪切 破坏模式
Keywords:
fast-growing poplar compression in the transverse direction impregnated modification with PF resin cross laminated lumber planar(rolling)shear failure modes
分类号:
S781.29
DOI:
10.3969/j.issn.1671-7627.2016.05.019
文献标志码:
A
摘要:
为评价速生杨木应用于正交胶合木(CLT)的可行性,采用3层混合CLT结构测试方法测试普通速生杨木、横纹压缩改性速生杨木、浸渍改性速生杨木和云杉-松-冷杉(SPF)规格材的滚动剪切模量和强度,分析滚动剪切破坏模式。结果表明:改性处理后,速生杨木的滚动剪切性能没有明显提高; 年轮方向的早、晚材交界处,木射线方向和髓心等区域是普通速生杨木和SPF规格材滚动剪切破坏主要区域; 速生杨木和改性速生杨木的滚动剪切性能都高于SPF规格材。普通速生杨木可直接作为CLT的横向层材料。
Abstract:
To evaluate the feasibility of using fast-growing poplar to fabricate cross laminated lumber(CLT),the planar(rolling)shear properties of fast-growing poplar, modified fast-growing poplar compressed in the transverse direction,modified fast-growing poplar impregnated with phenol-formaldehyde(PF)resin and Spruce-pine-fir(SPF)dimension lumber were measured using hybrid CLT in this study.The failure modes in planar(rolling)shear tests were also analyzed.It could be found that there was no obvious improvement in planar shear properties of fast-growing poplar after modification.The typical failure modes of fast-growing poplar and SPF in planar shear test included rolling shear failure along the growth ring direction,shear failure along the wood ray direction and shear failure along glue line direction.The planar shear modulus and strength of fast-growing poplar and modified fast-growing poplar were higher than those of SPF.Normal fast-growing poplar could been used in CLT as cross layer directly.

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备注/Memo

备注/Memo:
收稿日期:2016-06-01
基金项目:国家自然科学基金(31570559)
作者简介:王志强(1978—),男, 湖南衡阳人,副教授,博士,主要研究方向为木结构建筑和工程木产品,E-mail:wangzhiqiang@njfu.edu.cn.
引用本文:王志强,付红梅,罗欢,等.速生杨木横向层正交胶合木滚动剪切性能[J].南京工业大学学报(自然科学版),2016,38(5):116-120..
更新日期/Last Update: 2016-09-20