Numerical nonlinear analysis of RC beans with un-strengthened and CFRP-strengthened opening drilled under service loads within shear zones

Authors

  • Magdy Khalaf Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt. https://orcid.org/0000-0001-5944-4288
  • L. Aboul-Nour Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.
  • M. Khater Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.
  • M. Ibrahim Structural Engineering Dept., Faculty of Engineering, Zagazig University, Zagazig, Egypt.

DOI:

https://doi.org/10.3221/IGF-ESIS.63.17

Keywords:

Service load, Reinforced, Concrete, Beams, Openings, Strengthening, Shear, CFRP, Finite element, ANSYS, Nonlinear analysis

Abstract

Current research paper deals with reinforced concrete (R.C.) beams numerical modeling and suggested strengthening procedure if it is required to create an opening within their shear zones. Strengthening is assumed to be achieved during different service load application conditions. Reinforced Concrete beams with rectangular or circular opening in shear zone; as critical regions; sustain two concentrated system of loads are tested till failure before and after performing suggested opening assessing technique by means of Carbon Fibers Reinforced Polymer sheets (CFRP). The main aim of this research is simulating real practice situation where the beam is subjected to service loads, supported temporary by means of hydraulic jacks, opening is created and strengthening is performed then jacking supports are released. Results of achieved numerical nonlinear modeling are introduced and influence of strengthening achieving on improving assessed beams almost structural behavior such as initial cracking loads, load deflection curves, cracking patterns, failure loads & modes for reference (without opening), main un-strengthened control beams, and CFRP strengthened opening beams are introduced and analyzed in details. Some important conclusions & recommendations for designer and executive engineers are stated.

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Author Biographies

  • Magdy Khalaf, Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.

    Dr. Magdy Khalaf; Ph.D. : received his B.Sc. degree in Construction Engineering (Civil Engineering), M.Sc. degree in Structural Design Engineering and Ph.D. degree in Structural Engineering from Faculty of Engineering, Zagazig University in 1987, 1991 and 1996 respectively. In 1987 he was demonstrator, in 1991 he was Lecturer assistance and in 1996 up to now he is Lecturer of Structural Analysis & Design and Composite Structures at Structural Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt. Now, he has about 35 years of teaching experience, researching and consultation in civil engineering. During 1996-2000 he had lectured five tutorial academic year as a partial time Visitor Lecturer in Civil Engineering Technology Department, Benha Higher Institute of Technology; B.H.I.T.”, Benha, Egypt. During 2003-2011 he stayed eight tutorial & lecturing academic year as a full time Visitor Lecturer in Faculty of Engineering, Al-Fateh University; Al-Jefarah Branch; Janzour; Tripoli, Libya. Up to now, he has about 35 years of teaching experience and researching in Civil Engineering.

  • L. Aboul-Nour, Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.

    Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.

  • M. Khater, Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.

    Structural Engineering Dept. Staff, Faculty of Engineering, Zagazig University, Zagazig, Egypt.

  • M. Ibrahim, Structural Engineering Dept., Faculty of Engineering, Zagazig University, Zagazig, Egypt.

    Post Graduate Student, Structural Engineering Dept., Faculty of Engineering, Zagazig University, Zagazig, Egypt.

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Published

21-12-2022

Issue

Vol. 17 No. 63 (2023): January 2023

Section

Structural Integrity and Safety: Experimental and Numerical Perspectives

Categories

License

Copyright (c) 2022 Magdy Khalaf, L. Aboul-Nour, M. Khater, M. Ibrahim

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

Open Access Statement

Frattura ed Integrità Strutturale (Fracture and Structural Integrity, F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.

F&SI operates under the Creative Commons Licence Attribution 4.0 International (CC-BY 4.0). This allows to copy and redistribute the material in any medium or format, to remix, transform and build upon the material for any purpose, even commercially, but giving appropriate credit and providing a link to the license and indicating if changes were made.

How to Cite

Numerical nonlinear analysis of RC beans with un-strengthened and CFRP-strengthened opening drilled under service loads within shear zones. (2022). Frattura Ed Integrità Strutturale, 17(63), 206-233. https://doi.org/10.3221/IGF-ESIS.63.17
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