Investigation of bar buckling in columns confined with composite material jackets

Dionysios A. Bournas, Thanasis Triantafillou

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

    Abstract

    The onset and evolution of bar buckling at the plastic hinge of old-type reinforced concrete (RC) columns confined with composite material [textile-reinforced mortar (TRM) and fiber-reinforced polymer (FRP)] jackets was investigated experimentally and analytically in this study. The interaction between composite jacket (or concrete cover, for unconfined concrete) and embedded longitudinal compression reinforcement at the onset and evolution of bar buckling was achieved through strain measurements of the compression reinforcement. Moreover, the implementation of a stress-strain confinement model, which relates lateral with axial strains, allowed the description and monitoring of the axial-lateral strain relationship at the base of the columns throughout the evolution of bar buckling. Finally, based on the aforementioned confinement model and on the experimental measurements, the post-buckling behaviour of columns was related with the stiffness of the jacket.

    Original languageEnglish (US)
    Title of host publication10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10
    Pages117-134
    Number of pages18
    Volume1
    Edition275 SP
    StatePublished - Dec 1 2011
    Event10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention - Tampa, FL, United States
    Duration: Apr 2 2011Apr 4 2011

    Other

    Other10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention
    CountryUnited States
    CityTampa, FL
    Period4/2/114/4/11

    Fingerprint

    Buckling
    Composite materials
    Reinforcement
    Concretes
    Strain measurement
    Hinges
    Mortar
    Reinforced concrete
    Textiles
    Polymers
    Compaction
    Stiffness
    Plastics
    Fibers
    Monitoring

    Keywords

    • Bar buckling
    • Confinement
    • FRP
    • Reinforced concrete
    • Seismic retrofitting
    • Textile-reinforced mortar (TRM)

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Materials Science(all)

    Cite this

    Bournas, D. A., & Triantafillou, T. (2011). Investigation of bar buckling in columns confined with composite material jackets. In 10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10 (275 SP ed., Vol. 1, pp. 117-134)

    Investigation of bar buckling in columns confined with composite material jackets. / Bournas, Dionysios A.; Triantafillou, Thanasis.

    10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10. Vol. 1 275 SP. ed. 2011. p. 117-134.

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

    Bournas, DA & Triantafillou, T 2011, Investigation of bar buckling in columns confined with composite material jackets. in 10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10. 275 SP edn, vol. 1, pp. 117-134, 10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention, Tampa, FL, United States, 4/2/11.
    Bournas DA, Triantafillou T. Investigation of bar buckling in columns confined with composite material jackets. In 10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10. 275 SP ed. Vol. 1. 2011. p. 117-134
    Bournas, Dionysios A. ; Triantafillou, Thanasis. / Investigation of bar buckling in columns confined with composite material jackets. 10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10. Vol. 1 275 SP. ed. 2011. pp. 117-134
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