Interfacial shear stress concentration in RC beams strengthened in flexure with externally-bonded FRP

被引：0

作者：

Maalej, M ^{[1
]}

Bian, Y ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Civil Engn, Singapore 117576, Singapore

来源：

FRP COMPOSITES IN CIVIL ENGINEERING, VOLS I AND II, PROCEEDINGS | 2001年

关键词：

CFRP; debonding; failure mode; plate thickness; ripping; shear stress concentration; strengthening;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper reports the results of an experimental program designed to study the interfacial shear stress concentration at the plate curtailment of reinforced concrete (RC) beams strengthened in flexure with externally-bonded carbon fibre reinforced polymer (CFRP). Specifically, the study looks at the relationship between the CFRP-plate thickness and the interfacial shear stress concentration at the plate curtailment, the failure modes of the CFRP-strengthened beams as well as the efficiency of the CFRP external reinforcing system. The experimental program included five RC beams 115mm x 150mm in cross-section and 1500mm in length. Four of the RC beams were reinforced externally with CFRP plates of different thicknesses. Tests in this study showed that the thickness of CFRP plate affects not only the load-carrying and deflection capacities of the strengthened beam, but also the shear stress concentration at the CFRP/concrete interface and the beam failure mode.

引用

页码：519 / 526

页数：8