| CFRP加固RC梁弯曲裂缝引起的剥离分析 |
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| 引用本文： | 琚宏昌,熊志强,李远心,张凤,张贝宜.CFRP加固RC梁弯曲裂缝引起的剥离分析[J].广西工学院学报,2011,22(3):41-45,58. |
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| 作者姓名： | 琚宏昌 熊志强 李远心 张凤 张贝宜 |
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| 作者单位： | 广西工学院土木建筑工程系,广西柳州,545006 |
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| 基金项目： | 广西教育厅科研项目(20101OLX215)资助 |
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| 摘 要： | 为研究CFRP加固钢筋混凝土粱弯曲裂缝引起的界面粘结失效即剥离破坏机理，采用钢筋混凝土梁的受力原理，分析了加固梁截面的弯矩一曲率关系，结合截面应力应变的变化特性求得纤维布应力；根据滑移量角度与弯曲裂缝引起的剥离机理的关系，建立纤维布的拉力增量滑移模型，得出了相对滑移量表达式；利用非线性界面本构关系，对剥离破坏进行预测．...
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| 关 键 词： | CFRP加固 弯矩-曲率 滑移模型 粘结剪应力 剥离 |
Analysis of Flexural Crack Induced Debonding for CFRP-retrofitted RC Beams |
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| JU Hong-chang,XIONG Zhi-qiang,LI Yuan-xin,ZHANG Feng,ZHANG Bei-yi.Analysis of Flexural Crack Induced Debonding for CFRP-retrofitted RC Beams[J].Journal of Guangxi University of Technology,2011,22(3):41-45,58. |
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| Authors: | JU Hong-chang XIONG Zhi-qiang LI Yuan-xin ZHANG Feng ZHANG Bei-yi |
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| Affiliation: | JU Hong-chang,XIONG Zhi-qiang,LI Yuan-xin,ZHANG Feng,ZHANG Bei-yi (Department of Civil Engineering,Guangxi University of Technology,Liuzhou 545006,China) |
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| Abstract: | For the mechanism of bonding loss on the interface or debonding failure induced by flexural crack of CFRP-retrofitted concrete beams,based on the fundamental theory of RC beams,the moment-curvature relationship of the strengthened beams cross-section is obtained,consequently the CFRP tension is calculated due to the variation feature of the cross-section stress and strain.;In Addition,the theoretical analysis through the slip scope of the flexural crack induced debonding mechanism is conducted,an incrementa... |
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| Keywords: | CFRP reinforcement moment-curvature slip model bond shear stress debonding |
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