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Experimental and analytical investigations of CFFT columns with and without FRP bars under concentric compression

Journal Article


Abstract


  • This research study investigates experimentally and analytically the axial compressive behaviour of Concrete Filled

    Fiber Reinforced Polymer Tube (CFFT) columns with and without Fiber Reinforced Polymer (FRP) bars. The experimental

    program comprises five circular columns of 204-206 mm outer diameter and 800-812 mm height. All columns were tested under

    concentric axial compressive loads. It was found that CFFT columns with and without FRP bars achieved higher peak axial

    compressive loads and corresponding axial deformations than conventional steel reinforced concrete (RC) column. The

    contribution of FRP bars was about 12.1% of the axial compressive loads carried by CFFT columns reinforced with FRP bars.

    Axial load-axial deformation (P ‒ δ) curves of CFFT columns were analytically constructed, which mapped well with the

    experimental P ‒ δ curves. Also, an equation was proposed to predict the axial compressive load capacity of CFFT columns with

    and without FRP bars, which adequately considers the contributions of the circumferential confinement provided by FRP tubes

    and lower ultimate strength of FRP bars in compression than in tension.

Publication Date


  • 2019

Citation


  • Khan, Q. S., Sheikh, M. Neaz. & Hadi, M. N. S. (2019). Experimental and analytical investigations of CFFT columns with and without FRP bars under concentric compression. Steel and Composite Structures: an international journal, 30 (6), 591-601.

Scopus Eid


  • 2-s2.0-85065245338

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2461

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 591

End Page


  • 601

Volume


  • 30

Issue


  • 6

Place Of Publication


  • Korea, Republic of

Abstract


  • This research study investigates experimentally and analytically the axial compressive behaviour of Concrete Filled

    Fiber Reinforced Polymer Tube (CFFT) columns with and without Fiber Reinforced Polymer (FRP) bars. The experimental

    program comprises five circular columns of 204-206 mm outer diameter and 800-812 mm height. All columns were tested under

    concentric axial compressive loads. It was found that CFFT columns with and without FRP bars achieved higher peak axial

    compressive loads and corresponding axial deformations than conventional steel reinforced concrete (RC) column. The

    contribution of FRP bars was about 12.1% of the axial compressive loads carried by CFFT columns reinforced with FRP bars.

    Axial load-axial deformation (P ‒ δ) curves of CFFT columns were analytically constructed, which mapped well with the

    experimental P ‒ δ curves. Also, an equation was proposed to predict the axial compressive load capacity of CFFT columns with

    and without FRP bars, which adequately considers the contributions of the circumferential confinement provided by FRP tubes

    and lower ultimate strength of FRP bars in compression than in tension.

Publication Date


  • 2019

Citation


  • Khan, Q. S., Sheikh, M. Neaz. & Hadi, M. N. S. (2019). Experimental and analytical investigations of CFFT columns with and without FRP bars under concentric compression. Steel and Composite Structures: an international journal, 30 (6), 591-601.

Scopus Eid


  • 2-s2.0-85065245338

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2461

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 591

End Page


  • 601

Volume


  • 30

Issue


  • 6

Place Of Publication


  • Korea, Republic of