EFFECT OF CRACKS ON INTERFACIAL STRESSES IN RC BEAMS STRENGTHENED WITH PRE-STRESSED HYBRID FIBRE HEETS

摘要：

A finite element (FE) analysis model of the interracial layer in reinforced concrete (RC) beams strengthened with pre-stressed hybrid carbon fibre and glass fibre sheets (CFS-GFS) is established.Cracks at different locations in the interfacial layer of concrete are considered in numerical modeling.The FE results show that the strengthening pattern is of excellent interface performance and the strength of the fiber sheet could be effectively utilized.The results also indicate that the interfacial shear and normal stresses in the concrete release at the locations of concrete cracks and reach the maximal value near the concrete cracking.The shear and normal stresses near the interracial adhesive layer increase abruptly,and the cracks in the adhesive layer then appear.The axial stresses of hybrid fiber sheet near the cracks decrease locally at the sites of the concrete cracks.

关键词： Hybrid strengthening Interface stress Pre-stressed Crack

作者: Y.C.Guo L.J.Li P.Y.Huang F.Liu

作者单位: School of Civil and Transportation Engineering,South China University of Technology,Guangzhou,Guangdong,510040,P.R.China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1310-1313

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）