玻璃钢/复合材料 ›› 2009, Vol. 209 ›› Issue (2): 6-10.

• 基础研究 • 上一篇    下一篇

芳纶纤维加固钢筋混凝土梁界面粘结应力分析

田国芝1,赵树青1,王有志2,张慎伟2   

  1. 1山东交通职业学院,山东潍坊261206;2山东大学土建与水利学院,山东济南250061
  • 出版日期:2009-03-28 发布日期:2009-02-25
  • 作者简介:田国芝(1975),女,硕士,讲师,主要从事建筑材料方面的研究。

ANALYSIS OF INTERFACIAL STRESS IN THE ADHESIVE LAYER  OF REINFORCED
 CONCRETE BEAMS STRENGTHENED WITH AFRP

  • Online:2009-03-28 Published:2009-02-25

摘要:

本文根据弹性梁理论和部分组合截面假定,并且考虑了钢筋混凝土梁和芳纶纤维剪切变形的影响,对两点集中加载情况下的芳纶纤维加固钢筋混凝土梁的界面粘结剪应力和正应力进行了推导分析,由纤维端部边界条件得出了两种应力的解析解,根据试验梁的基本参数绘出了界面应力的分布曲线,找到了界面应力的分布规律,由此提出了降低纤维布端部应力集中的方法,可供施工参考使用。

关键词: 芳纶纤维, 加固, 界面应力, 分布曲线

Abstract:

According to elastic theory and the assumption of partial combination section,considering the effect of  shear deformation of RC beam and AFRP,this paper provides the analytical solution of the bonding shear stress and normal stress between the concrete surface and AFRP.In addition,with the application of boundary condition,this paper gives the interfacial shear stress and normal stress in the adhesive layer for two point loads,and plots the distribution curve of interfacial shear stress and normal stress,which demonstrates the distribution characters of stress in the adhesive layer.Finally,this paper presents methods for decreasing stress concentration at the end of AFRP,which can afford reference for the project.

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