Analysis of the bond-slip behaviour of FRP reinforcing bars in concrete

Karatzaferis, V; Kattis, MA; Papanikos, P

dc.contributor.author	Karatzaferis, V	en
dc.contributor.author	Kattis, MA	en
dc.contributor.author	Papanikos, P	en
dc.date.accessioned	2014-03-01T02:49:42Z
dc.date.available	2014-03-01T02:49:42Z
dc.date.issued	2004	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34700
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-6344257004&partnerID=40&md5=91732bea48a718fad08a247529470db5	en
dc.subject	Bond-slip	en
dc.subject	Concrete	en
dc.subject	Finite elements	en
dc.subject	FRP	en
dc.subject.other	Atmospheric humidity	en
dc.subject.other	Ductility	en
dc.subject.other	Fiber reinforced materials	en
dc.subject.other	Finite element method	en
dc.subject.other	Numerical methods	en
dc.subject.other	Problem solving	en
dc.subject.other	Stiffness matrix	en
dc.subject.other	Analytical models	en
dc.subject.other	Bond-slip	en
dc.subject.other	Fiber reinforced polymers (FRP)	en
dc.subject.other	Finite elements	en
dc.subject.other	Reinforced concrete	en
dc.title	Analysis of the bond-slip behaviour of FRP reinforcing bars in concrete	en
heal.type	conferenceItem	en
heal.publicationDate	2004	en
heal.abstract	The safe use of Fiber Reinforced Polymer (FRP) bars, which are being used instead of steel bars in concrete structures, requires the development of new models able to describe the mechanical behaviour of the bond interface between the FRP bars and the concrete. It has been experimentally shown that the bond-slip behaviour of FRP bars, embedded in concrete, differs both qualitatively and quantitatively from that of steel bars. It is therefore necessary to develop new methodologies for the design of concrete structures reinforced with FRP bars based on the behaviour of the FRP materials. In the present article, a new analytical model based on the finite element method is proposed in order to evaluate the bond stresses that are developed along an FRP bar embedded in concrete. The bond between the FRP bar and concrete is simulated by a continuous spring-like connection that shows a non-linear behaviour. The proposed analysis involves the construction of the tangent stiffness matrix of the bar in an incremental form in order to solve the non-linear equations describing the problem. The proposed methodology is applied in specific cases of monotonic loading and the numerical predictions are compared well with experimental results.	en
heal.journalName	Multiscaling in Applied Science and Emerging Technology, Fundamentals and Applications in Mesomechanics: Proceedings of the Sixth International Conference for Mesomechanics	en
dc.identifier.spage	446	en
dc.identifier.epage	451	en