摘要
纤维增强复合材料与砖界面的粘结性能是FRP加固砌体结构受力分析的基础。该文对纤维增强复合材料与砖界面粘结性能建立界面剥离模型,采用试验所得的直线上升段与双曲线下降段的分段界面粘结-滑移模型对界面的粘结剪应力、滑移、正应力进行推导,得到了解析解。理论得出了FRP布有效粘结长度的概念,并基于该文的粘结滑移模型得到其解析解。对理论推导出的界面剥离模型与试验结果进行分析对比,表明该文建立的界面剥离模型可以很好的再现剥离破坏整个过程。
The use of fiber reinforced plastic （FRP） plates and sheets for strengthening masonry structures have already been implemented actually. And the performance of the interface between FRP and masonry is one of the key factors affecting the behavior of the strengthened structure. This paper presents an analytical solution model based on the experimental piecewise local bond-slip law, and the analytical, solution model is capable of predicting the entire debonding propagation process. Expressions for the interfacial shear stress distribution, slip and normal stress distribution of FRP section are derived for different loading stages. The effective bond length is defined and the analytical solution is acquired. The debonding process is discussed in detail and the analytical results are compared with experimental data well.
出处
《工程力学》
EI
CSCD
北大核心
2009年第10期50-58,共9页
Engineering Mechanics
基金
国家高技术研究发展计划(863)项目(2004AA336010)
关键词
纤维增强复合材料
砖
粘结滑移
剥离
有效粘结长度
fiber reinforced polymer/plastic
brick
bond-slip
debonding
effective bond length
