Analysis of debonding failure along a softening FRP-toconcrete interface between two adjacent cracks

J F Chen, H Yuan, J G Teng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an analytical solution for the debonding process of an FRP-to-concrete bonded Joint where the FRP is subject to tension at both ends. This bonded joint model closely approximates the debonding process of an FRP-to-concrete interface between two adjacent cracks in a flexurally strengthened reinforced concrete (RC) member. The interface is assumed to possess a linearly softening local bond-slip law. Expressions for the interfacial shear stress distributions and load-displacement responses are derived for different loading stages. The debonding process is discussed in detail. Finally, results from the analytical solution are presented to illustrate how the bond length and the left-to-right load ratio affect the behaviour of such bonded joints. The study has direct relevance to intermediate crack induced (IC) debonding failures in RC members flexurally-strengthened with a tension face FRP plate.

Original languageEnglish
Title of host publicationBond Behaviour of FRP in Structures: Proceedings of the International Symposium BBFS 2005
EditorsJF Chen, JG Teng
Place of PublicationHONG KONG
PublisherIIFC SECRETARIAT
Pages103-111
Number of pages9
ISBN (Print)962-367-506-2
Publication statusPublished - 2005
EventInternational Symposium on Bond Behaviour of FRP in Structures - Hong Kong
Duration: 7 Dec 20059 Dec 2005

Conference

ConferenceInternational Symposium on Bond Behaviour of FRP in Structures
CityHong Kong
Period7/12/059/12/05

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