Variation of Hoop Strains in Concrete-filled FRP Tubes with Concrete Strength, Amount of Confinement and Specimen Slenderness

Thomas Vincent, Togay Ozbakkaloglu

    Research output: Contribution to conferencePaper

    Abstract

    This paper presents an experimental investigation on the variation of FRP hoop strains around specimen perimeter and along specimen height. A total of 24 concrete-filled fiber reinforced polymer (FRP) tubes (CFFTs) with circular cross-sections were tested under monotonic axial compression. The CFFT specimens were instrumented with numerous lateral strain gauges attached to the FRP tubes to examine the development of hoop strains along the specimen height and around specimen perimeter. Specimens were manufactured with height-to-diameter ratios (H/D) of 2 or 5, with all specimens maintaining a nominal diameter of 150 mm. Additional test parameters selected for this study included amount of confinement and concrete compressive strength. This paper focuses on the experimentally recorded hoop strains and their variation around specimen perimeter and along specimen height. The results indicate that hoop rupture strains along the height of CFFTs become more uniform for specimens with higher amounts of confinement. On the other hand, the variation of hoop strains around the perimeter of CFFTs was not observed to be significantly influenced by height-to-diameter ratio (H/D), concrete strength or amount of confinement.

    Original languageEnglish
    Pages977-982
    Number of pages6
    DOIs
    Publication statusPublished - 2014
    Event3rd International Conference on Civil Engineering and Transportation - Kunming, China
    Duration: 14 Dec 201315 Dec 2013

    Conference

    Conference3rd International Conference on Civil Engineering and Transportation
    CountryChina
    CityKunming
    Period14/12/1315/12/13

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  • Cite this

    Vincent, T., & Ozbakkaloglu, T. (2014). Variation of Hoop Strains in Concrete-filled FRP Tubes with Concrete Strength, Amount of Confinement and Specimen Slenderness. 977-982. Paper presented at 3rd International Conference on Civil Engineering and Transportation, Kunming, China. https://doi.org/10.4028/www.scientific.net/AMM.501-504.977