Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading

George C. Manos, Konstantinos B. Katakalos, Marios Theofanous

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

    Abstract

    The successful validation of a numerical model is presented that can realistically approximate the shear behavior of reinforced concrete (RC) T-section beams strengthened against shear with externally applied open hoop steel fiber reinforcing polymer (SFRP) strips. For this purpose, the measured load-deformation response of three (3) full-scale R/C beam specimens is utilized. These specimens were imposed in a cyclic loading sequence up to failure. Open hoop steel FRP strip shear reinforcement was applied externally to upgrade the shear capacity of two (2) RC beam specimens. For the first specimen the SFRP strips were applied without anchorage, whereas for the other strengthened specimen the SFRP strips were attached together with a novel anchoring device. The successful numerical simulation predicts with a very good degree of approximation the observed load-deformation behavior and the ultimate shear capacity of all these specimens as well as the observed modes of failure including diagonal concrete cracking, debonding of the CFRP strips in the case of no anchoring, or the plastification of parts of the anchoring devices plus the adjacent crushing of the concrete.

    Original languageEnglish
    Title of host publicationCOMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
    PublisherNational Technical University of Athens
    Pages505-518
    Number of pages14
    Publication statusPublished - 2015
    Event5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015 - Hersonissos, Crete, Greece
    Duration: 25 May 201527 May 2015

    Conference

    Conference5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2015
    Country/TerritoryGreece
    CityHersonissos, Crete
    Period25/05/1527/05/15

    Keywords

    • Experimental investigation
    • FRPs
    • Numerical simulation FRP strip anchoring instructions
    • Reinforced concrete T-beams
    • Shear strengthening

    ASJC Scopus subject areas

    • Computers in Earth Sciences
    • Computational Mathematics
    • Geotechnical Engineering and Engineering Geology

    Fingerprint

    Dive into the research topics of 'Experimental investigation and numerical simulation of shear behaviour of RC T-beam specimens with or without SFRP-strips under cyclic loading'. Together they form a unique fingerprint.

    Cite this