Flexure and shear behavior of RC beams strengthened by external reinforcement

F. Minelli, G. A. Plizzari, J. Cairns

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

    Abstract

    A novel strengthening technique for Reinforced Concrete (RC) beams based on non-prestressed external reinforcing bars anchored at the supports of simply supported beams or slabs is herein considered. External reinforcement can be easily adopted to retrofit existing reinforced concrete structures. The simplicity of the proposed technique offers advantages in ease of installation, quality control on site and future inspections if comparison to other methods. An analytical and numerical evaluation of the available experimental results as well as a parametric study allows investigation of the effect of different percentages of external reinforcement and of different collapse mechanisms (shear and flexure), in order to optimize the amount of external reinforcement that could provide enough bearing capacity and sufficient ductility prior to collapse. The numerical analyses enable to highlight the collapse phenomena, with emphasis to both the arch and the beam action, the ductility and the stiffness in the cracked stage. © 2009 Taylor & Francis Group.

    Original languageEnglish
    Title of host publicationConcrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR
    Pages377-378
    Number of pages2
    Publication statusPublished - 2009
    Event2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting - Cape Town, South Africa
    Duration: 24 Nov 200826 Nov 2008

    Conference

    Conference2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting
    Abbreviated titleICCRRR 2008
    CountrySouth Africa
    CityCape Town
    Period24/11/0826/11/08

    Fingerprint

    Reinforced concrete
    Reinforcement
    Ductility
    Arches
    Bearing capacity
    Concrete construction
    Quality control
    Inspection
    Stiffness

    Cite this

    Minelli, F., Plizzari, G. A., & Cairns, J. (2009). Flexure and shear behavior of RC beams strengthened by external reinforcement. In Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR (pp. 377-378)
    Minelli, F. ; Plizzari, G. A. ; Cairns, J. / Flexure and shear behavior of RC beams strengthened by external reinforcement. Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. pp. 377-378
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    title = "Flexure and shear behavior of RC beams strengthened by external reinforcement",
    abstract = "A novel strengthening technique for Reinforced Concrete (RC) beams based on non-prestressed external reinforcing bars anchored at the supports of simply supported beams or slabs is herein considered. External reinforcement can be easily adopted to retrofit existing reinforced concrete structures. The simplicity of the proposed technique offers advantages in ease of installation, quality control on site and future inspections if comparison to other methods. An analytical and numerical evaluation of the available experimental results as well as a parametric study allows investigation of the effect of different percentages of external reinforcement and of different collapse mechanisms (shear and flexure), in order to optimize the amount of external reinforcement that could provide enough bearing capacity and sufficient ductility prior to collapse. The numerical analyses enable to highlight the collapse phenomena, with emphasis to both the arch and the beam action, the ductility and the stiffness in the cracked stage. {\circledC} 2009 Taylor & Francis Group.",
    author = "F. Minelli and Plizzari, {G. A.} and J. Cairns",
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    language = "English",
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    Minelli, F, Plizzari, GA & Cairns, J 2009, Flexure and shear behavior of RC beams strengthened by external reinforcement. in Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. pp. 377-378, 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, Cape Town, South Africa, 24/11/08.

    Flexure and shear behavior of RC beams strengthened by external reinforcement. / Minelli, F.; Plizzari, G. A.; Cairns, J.

    Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. p. 377-378.

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

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    Minelli F, Plizzari GA, Cairns J. Flexure and shear behavior of RC beams strengthened by external reinforcement. In Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. p. 377-378