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Torsional Behavior of Strengthened Reinforced Concrete Beams by CFRP Sheets: Parametric study

    Mashael A. Alrawi Mohammad N. Mahmood

Anbar Journal of Engineering Sciences, 2021, Volume 12, Issue 2, Pages 229-244
10.37649/aengs.2021.171191

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Abstract

This paper presents a nonlinear finite element analysis of reinforced concrete beams subjected to pure torsion. A verification procedure was performed on three specimens by finite element analysis using ANSYS software. The verification with the experimental work revealed a good agreement through the torque-rotation relationship, ultimate torque, rotation, and crack pattern. The studied parameters of strengthening by CFRP sheets included strengthening configurations and number of CFRP layers. The confinement configuration methods included full wrapping sheet around the beam, U-shaped sheet, ring strips spaced at either 65 or 130 mm, longitudinal strips at the top and bottom faces, U-shaped strips in addition to the number of layers variable. It was found that the performance of the beam for resisting a torsional force was improved by (33-49%) depending on the method of coating with CFRP sheets and the number of used layers. A change in the angle of twist, as well as the shape of the spread of cracks, was also noticed from the predicted results.
Keywords:
    RC beam CFRP ultimate strength finite element analysis torsion
Main Subjects:
  • Civil Engineering
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(2021). Torsional Behavior of Strengthened Reinforced Concrete Beams by CFRP Sheets: Parametric study. Anbar Journal of Engineering Sciences, 12(2), 229-244. doi: 10.37649/aengs.2021.171191
Mashael A. Alrawi; Mohammad N. Mahmood. "Torsional Behavior of Strengthened Reinforced Concrete Beams by CFRP Sheets: Parametric study". Anbar Journal of Engineering Sciences, 12, 2, 2021, 229-244. doi: 10.37649/aengs.2021.171191
(2021). 'Torsional Behavior of Strengthened Reinforced Concrete Beams by CFRP Sheets: Parametric study', Anbar Journal of Engineering Sciences, 12(2), pp. 229-244. doi: 10.37649/aengs.2021.171191
Torsional Behavior of Strengthened Reinforced Concrete Beams by CFRP Sheets: Parametric study. Anbar Journal of Engineering Sciences, 2021; 12(2): 229-244. doi: 10.37649/aengs.2021.171191
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This journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

This journal is licensed under a Creative Commons Attribution 4.0 International (CC-BY 4.0)

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