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[1]耿启凡,陆伟东.竖嵌FRP层板增强胶合木梁界面应力分析[J].南京工业大学学报(自然科学版),2014,36(01):66-70.[doi:10.3969/j.issn.1671-7627.2014.01.012]
 GENG Qifan,LU Weidong.Analysis on boud shear stress of glulam beams reinforced with vertical fiber reinforced polymer inlay[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(01):66-70.[doi:10.3969/j.issn.1671-7627.2014.01.012]
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竖嵌FRP层板增强胶合木梁界面应力分析()
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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:
36
期数:
2014年01期
页码:
66-70
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Analysis on boud shear stress of glulam beams reinforced with vertical fiber reinforced polymer inlay
文章编号:
1671-7627(2014)01-0066-05
作者:
耿启凡陆伟东
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
GENG QifanLU Weidong
College of Civil Engineering,Nanjing University of Technology,Nanjing 211800,China
关键词:
胶合木 FRP 竖嵌 黏结剪应力 解析分析 有限元分析
Keywords:
glued laminated timber(glulam) fiber reinforced polymer(FRP) vertical inlay bond shear stress analytical study finite element analysis
分类号:
TU366
DOI:
10.3969/j.issn.1671-7627.2014.01.012
文献标志码:
A
摘要:
采用弹性理论分析方法推导出3种荷载作用形式下的纤维复合材料(FRP)-木材界面的黏结剪应力计算公式,并进行有限元模拟,发现二者的吻合度较高。同时进行了参数化分析,结果表明:影响FRP-木材界面黏结剪应力的因素主要有竖嵌FRP板布置条数、FRP配筋率、FRP与木材的弹性模量比值。在实际设计此类构件时选取适当的参数,有利于降低FRP-木材界面黏结剪应力。最后将竖嵌FRP增强方式与传统横嵌FRP增强方式的界面剪应力进行对比,发现此种竖嵌增强方式在相同影响参数下可减少53%~75%的FRP-木材界面黏结剪应力。
Abstract:
A formula of calculating the interfacial shear stress of fiber reinforced polymer(FRP)-glued beams under three-load conditions was derived according to linear elastic theory,the result matched closely with that of finite element analysis.Meanwhile,parameter analysis was carried out.The analysis showed that reinforcement ratio,elastic modulus ratio of FRP to glulam and the number of vertical embedded FRP were the main factors related to the maximum bond shear stress.In practical design,the proper selection of parameters reduced the FRP-wood interface bonding shear stress.The comparison of calculated results by the method with that of the traditional enhanced method showed that the new FRP enhanced method reduced 53%~75% of interfacial shear stress.

参考文献/References:

[1] 谢启芳.CFRP布加固木梁截面粘结剪应力的试验研究和理论分析[J].工程力学2008,25(7):229-240.
[2] 杨小军,孙友富,王正.CFRP与落叶松和杉木木材有效粘结长度的研究[J].西北农林科技大学学报,2011,39(12):101-106.
[3] 胡玲,杨勇新,汪健根,等.层数对玄武岩纤维布与木材有效粘结长度影响的试验研究[J].建筑结构,2010,40(2):67-69.
[4] 杨会峰,刘伟庆.FRP增强胶合木梁的粘结剪应力分析[J].江苏大学学报:自然科学版,2007,28(1):72-76.
[5] Malek A M,Saadatmanesh H,EhsaniM R.Prediction of failure load of R/C beams strengthened with FRP plate due to stress concentration at the plate end[J].ACI S Tructural Journal,1998,95(1):142-152.
[6] Mukhopadhyaya P,Swamy N.Interface shear stress:a new design criterion for plate debonding[J].Journal of Composites for Construction,ASCE,2001,5(1):35-43.
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备注/Memo

备注/Memo:
收稿日期:2013-04-25
基金项目:国家高技术研究发展计划(863计划)(2012AA03A204)
作者简介:耿启凡(1989—),男,安徽滁州人,硕士生,主要研究方向为FRP增强胶合木; 陆伟东(联系人),教授,E-mail:glulam@163.com..
更新日期/Last Update: 2014-01-20