[1]淳庆,潘建伍,包兆鼎.碳-芳混杂纤维布加固木梁抗弯性能试验研究[J].东南大学学报(自然科学版),2011,41(1):168-173.[doi:10.3969/j.issn.1001-0505.2011.01.033]
 Chun Qing,Pan Jianwu,Bao Zhaoding.Experimental study on bending behavior of timber beams strengthened with CFRP/AFRP hybrid FRP sheet[J].Journal of Southeast University (Natural Science Edition),2011,41(1):168-173.[doi:10.3969/j.issn.1001-0505.2011.01.033]
点击复制

碳-芳混杂纤维布加固木梁抗弯性能试验研究()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第1期
页码:
168-173
栏目:
土木工程
出版日期:
2011-01-20

文章信息/Info

Title:
Experimental study on bending behavior of timber beams strengthened with CFRP/AFRP hybrid FRP sheet
作者:
淳庆1潘建伍2包兆鼎3
(1东南大学城市与建筑遗产保护教育部重点实验室,南京 210096)
(2南京航空航天大学土木系,南京 210016)
(3南京海拓复合材料有限责任公司,南京 211212)
Author(s):
Chun Qing1Pan Jianwu2Bao Zhaoding3
(1Key Laboratory of Urban and Architectural Heritage Conservation of Ministry of Education, Southeast University, Nanjing 210096, China)
(2Civil Engineering Department, Nanjing University of Aeronautics and Astronautics, Nanjing
关键词:
混杂纤维木梁抗弯承载力刚度
Keywords:
HFRP (hybrid fiber reinforced polymer) timber beam bending bearing capacity stiffness
分类号:
TU366.2
DOI:
10.3969/j.issn.1001-0505.2011.01.033
摘要:
通过碳-芳混杂纤维布加固矩形木梁(杉木和松木)的抗弯性能试验,研究了不同层数的碳-芳混杂纤维布加固矩形木梁的破坏形式、抗弯承载力、荷载-挠度曲线和截面应变分布.试验结果表明:与未加固试件相比,木梁经碳-芳混杂纤维布加固后,其抗弯承载力和刚度有了一定程度的提高,抗弯承载力提高幅度在18.1%~62.0%(松木)和7.7%~29.7%(杉木); 刚度提高幅度在13%~21%(松木)和6%~10%(杉木).木梁截面应变沿高度方向的分布基本符合平截面假定.最后,基于试验数据拟合,提出了碳-芳混杂纤维加固木梁抗弯承载力的计算公式.
Abstract:
Based on the experiment of timber rectangle beams (made of deal and fir) strengthened with CFRP(carbon fiber reinforced polymer)/AFRP(aramid FRP) hybrid FRP(HFRP) sheet, the failure mode, bending bearing capacity, loading-deflection curve and strain distribution at mid-span section of timber beam with different number of reinforced sheet layer are analyzed. The results show that comparing with the specimens without being strengthened by HFRP, there is certain improvement in bending bearing capacity and stiffness of the specimens strengthened with HFRP. Bending bearing capacity of the deal specimens and fir specimens can get an improvement of 18. 1% to 62. 0% and 7. 7% to 29. 7% respectively. The improvement of stiffness of the deal specimens and fir specimens are 13% to 21% and 6% to 10% respectively. Based on the experimental data, the computing formulas of bending bearing capacity of timber rectangle beams strengthened with HFRP are presented.

参考文献/References:

[1] 许清风,朱雷.FRP加固木结构的研究进展[J].工业建筑,2007,37(9):104-108.
  Xu Qingfeng,Zhu Lei.State-of-the-art of wood structure strengthened with FRP[J].Industrial Construction,2007,37(9):104-108.(in Chinese)
[2] Blas H J,Romani M.Investigations of the load carrying behaviors of composite glued laminated timber beams reinforced with fiber reinforced plastic[J].European Journal of Wood and Wood Products,2001,59 (5):364-373.
[3] Dagher H J,Kimball T E,Shaler S M,et al.Effect of FRP reinforcement on low grade eastern hemlock glulams[C]//Proceedings of 1996 National Conference on Wood Transportation Structures.Madison,USA,1996:341-345.
[4] Brunner M,Schnueriger M.Timber beams strengthened by attaching prestressed carbon FRP laminates with a gradiented anchoring device[C]//Proceedings of the International Symposium on Bond Behavior of FRP in Structures.Hong Kong,China,2005:465-471.
[5] 张大照.CFRP 布加固修复木柱梁性能研究[D].上海:同济大学土木工程学院,2003.
[6] Xu Qingfeng,Zhu Lei,Li Xiangmin,et al.Flexural behavior of wood beams with knots strengthened with CFRP[C]//Proceedings of FRPRCS-8.Patras,Greece,2007:243-248.
[7] 王全凤,李飞,陈浩军,等.玄武岩纤维布加固木梁抗弯性能的试验研究与有限元分析[J].工业建筑,2010,40(4):126-130.
  Wang Quanfeng,Li Fei,Chen Haojun,et al.Experimental study on flexural behaviour of timber beams reinforced with BFRP sheets[J].Industrial Construction,2010,40(4):126-130.(in Chinese)
[8] 王全凤,李飞,陈浩军,等.GFRP加固木梁抗弯性能的试验研究与理论分析[J].建筑结构,2010,40(5):50-52.
  Wang Quanfeng,Li Fei,Chen Haojun,et al.Experimental study on bending behavior of timber beams reinforced with GFRP sheets[J].Building Structure.2010,40(5):50-52.(in Chinese)
[9] 杨会峰,刘伟庆,邵劲松,等.FRP加固木梁的受弯性能研究[J].建筑材料学报,2008,11(5):591-597.
  Yang Huifeng,Liu Weiqing,Shao Jinsong,et al.Study on flexural behavior of timber beams strengthened with FRP[J].Journal of Building Materials,2008,11(5):591-597.(in Chinese)
[10] 王增春,南建林,王锋.CFRP增强预弯木梁抗弯承载力计算方法[J].建筑科学,2007,23(9):7-11.
  Wang Zengchun,Nan Jianlin,Wang Feng.Calculation method of flexural bearing capacity of preflexed timber beams reinforced by CFRP[J].Building Science,2007,23(9):7-11.(in Chinese)

备注/Memo

备注/Memo:
作者简介:淳庆(1979—),男,博士,讲师,国家一级注册结构工程师,cqnj1979@163.com.
基金项目:国家自然科学基金资助项目(51008059)、中国博士后科学基金资助项目(20090450072)、江苏省博士后科学基金资助项目(0901003c)、东南大学博士后重点科研资助项目.
引文格式: 淳庆,潘建伍,包兆鼎.碳-芳混杂纤维布加固木梁抗弯性能试验研究[J].东南大学学报:自然科学版,2011,41(1):168-173.[doi:10.3969/j.issn.1001-0505.2011.01.033]
更新日期/Last Update: 2011-01-20