论文部分内容阅读
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 bond behavior between FRP and brick interface is the basis of stress analysis of FRP reinforced masonry structure. In this paper, the interfacial debonding model was established for the interfacial adhesion between fiber-reinforced composites and brick. Using the interfacial adhesion-slip model of the linear ascending section and the hyperbolic descending section, the interfacial bond shear stress, , Normal stress is deduced and analytic solution is obtained. The concept of the effective bond length of FRP cloth is obtained theoretically and its analytical solution is obtained based on the bond slip model of the article. The theoretical model and experimental results are analyzed and compared. The experimental results show that the interface model developed in this paper can reproduce the whole process of peeling and destroying well.