Interaction diagram for RC column strengthened by steel angles and strips

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Published Mar 25, 2022
DOI https://doi.org/10.3221/IGF-ESIS.60.01

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Osman Shallan
Department of Structural Engineering, University of Zagazig, Zagazig, Egypt
Thrwat Sakr
Department of Structural Engineering, University of Zagazig, Zagazig, Egypt
Mahmoud Khater
Department of Structural Engineering, University of Zagazig, Zagazig, Egypt
Ahmed Ismail
Department of Structural Engineering, University of Zagazig, Zagazig, Egypt

Abstract

This paper presents an analytical model to construct the interaction diagrams (normal force and moment) for the RC column strengthened using the steel jacket technique. The proposed model is defined using the strain distribution block by determining the location of the neutral axis in the concrete section. The proposed analytical formulation is verified by experimental results performed by previous researches and numerical models using the nonlinear program ANSYS. The factors affecting the capacity of the strengthened column are taken into consideration, such as the amount of loads resisted by the steel cage, steel strips spacing, and the effect of concrete confinement. The results of the proposed model are in good agreement with the results from the experimental and numerical work used in verification. A practical design formula has been presented for strengthened columns.

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    Issue
    Vol. 16 No. 60 (2022): April 2022
    Section
    Structural Integrity and Safety: Experimental and Numerical Perspectives

    How to Cite

    Shallan, O., Sakr, T., Khater, M., & Ahmed Ismail. (2022). Interaction diagram for RC column strengthened by steel angles and strips. Frattura Ed Integrità Strutturale, 16(60), 1–12. https://doi.org/10.3221/IGF-ESIS.60.01
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