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Theoretical study of strengthening for increased shear bearing capacity
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0001-7799-5809
2005 (English)In: Journal of composites for construction, ISSN 1090-0268, E-ISSN 1943-5614, Vol. 9, no 6, p. 497-506Article in journal (Refereed) Published
Abstract [en]

In recent years, the use of carbon fiber reinforced polymer (CFRP) has been shown to be a competitive method for strengthening both the structural and economic performance of concrete. The method has been used for almost a decade, yet – most research undertaken has studied the flexural behavior of strengthened structures, while research on shear strengthening has been limited. The work presented in this paper focuses on CFRP shear strengthening of concrete beams. The theory presented addresses the limitations of the widely used truss model, and a refinement is suggested. A reduction factor to consider the nonuniform strain distribution over the cross section is proposed and strain limitations are prescribed for the principal strain in the concrete instead of the fiber strain, as in previous studies. The derived analytical model is compared to experimental data from tests. Fairly good agreement is found between results from tests and calculated values from theory with regard to both shear-bearing capacity and average fiber utilization.

Place, publisher, year, edition, pages
2005. Vol. 9, no 6, p. 497-506
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-11458DOI: 10.1061/(ASCE)1090-0268(2005)9:6(497)ISI: 000233476800004Scopus ID: 2-s2.0-29144463753Local ID: a6bf0630-6b89-11db-83c6-000ea68e967bOAI: oai:DiVA.org:ltu-11458DiVA, id: diva2:984408
Note
Validerad; 2005; 20061103 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Carolin, AndersTäljsten, Björn

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