[1]朱晓冬,何鑫巍,刘玉*. GFRP加固木结构规格材抗弯力学性能及可靠性研究[J].西北林学院学报,2014,29(05):181-185.[doi:doi:10.3969/j.issn.1001-7461.2014.05.34]
　ZHU Xiao-dong,HE Xin-wei,LIU Yu*. Reliability of GFRP Reinforced Wooden Structure Lumber[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(05):181-185.[doi:doi:10.3969/j.issn.1001-7461.2014.05.34]
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 GFRP加固木结构规格材抗弯力学性能及可靠性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年05期
页码:
181-185
栏目:
出版日期:
2014-09-30

文章信息/Info

Title:
 Reliability of GFRP Reinforced Wooden Structure Lumber
文章编号:
1001-7461(2014)05-0181-05
作者:
 朱晓冬; 何鑫巍; 刘玉*
 （东北林业大学 生物质材料科学与技术教育部重点实验室，黑龙江 哈尔滨 150040）
Author(s):
 ZHU Xiao-dong;  HE Xin-wei;  LIU Yu*
 (Key Lab of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China)
关键词:
 ; 木结构; 规格材; 玻璃纤维布; 可靠性
Keywords:
 ; wooden structure;  lumber;  glass fiber reinforced plastics;  reliability
分类号:
S781.21
DOI:
doi:10.3969/j.issn.1001-7461.2014.05.34
文献标志码:
A
摘要:
 将有限元分析和无损检测方法用于木结构规格材的可靠度研究，分析不同贴面工艺参数对玻璃纤维增强规格材抗弯力学性能和可靠度的影响，可以为木结构强度分级、可靠性计算及优化设计提供科学的方法。采用正交试验设计方法，分析贴面厚度、施胶量和贴面尺寸对玻璃纤维布增强落叶松规格材力学性能和可靠度的影响。研究表明：1）各工艺参数对玻璃纤维布增强落叶松规格材MOE的影响顺序为：纤维布贴面厚度<施胶量<贴面尺寸，当玻璃纤维布贴面尺寸不到规格材试件长度的1/4时，MOE的下降幅度较大。2）在可靠度满足96%以上的条件下，最佳贴面参数为贴面厚度3 mm，施胶量125 g/m2，贴面尺寸为1/2。3）通过可靠性分析结果表明素材在425 N载荷下挠度<0.003 L的概率是9%，而贴玻璃纤维布后可靠度平均达到53.8%；<0.005 L的概率是71.6%，而贴玻璃纤维布后可靠度达到97.3%，粘贴玻璃纤维布可以显著增加木结构规格材的可靠度。
Abstract:
 The finite element analysis and non-destructive testing methods were used for reliability studies of wooden structure dimension lumber. The impact of different process parameters of glass fiber reinforced on the flexural mechanical properties of materials and reliability was analyzed. The results can be used for the classification of wood structural strength, reliability calculation and optimization design. The orthogonal design was used to analyze the effect of thickness, glue and surface size of glass fiber reinforced plastics (GFRP) on the mechanics performance and reliability of reinforced wood structure lumber. The results showed that: 1) the influence order of various parameters on the modulus of elasticity (MOE) was surface size>glue>thickness, when the surface size was less than the 1/4 length of the specimen, MOE reduced greatly. 2)While the reliability met the above 96% conditions, the optimal parameters were thickness 3 mm, glue 125 g/m2, surface size, the 1/2 length of the specimen. 3)The probability of material deflection less than 0.003 L was 9% at 425 N load, and FRP reliability was 53.8%; the probability of material deflection less than 0.005 L was 71.6%, and the FRP reliability reached 97.3%, GFRP can significantly increase the reliability of wooden structure lumber.

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备注/Memo

备注/Memo:
 收稿日期：2013-11-20修回日期：2014-01-13
基金项目：中央高校基本科研业务费专项资金项目（DL11CB05）；东北林业大学大学生科研训练项目（2012051）。
作者简介：朱晓冬，男，工学博士，副教授，研究方向：木材科学与技术。E-mail:pse4646@126.com
*通信作者：刘玉，女，工学博士，讲师，研究方向：木材科学与技术。E-mail:liuyu820524@126.com
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