Structural Engineering and Mechanics

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Behavior of CFRP strengthened RC multicell box girders under torsion

  • Majeed, Abeer A. (Engineering Affairs Department, University of Baghdad) ;
  • Allawi, Abbas A. (Department of Civil Engineering, University of Baghdad) ;
  • Chai, Kian H. (Department of Civil Engineering, Faculty of Engineering Building, University of Malaya) ;
  • Badaruzzam, Hameedon W. Wan (Department of Civil and Structural Engineering, Faculty of Engineering, Universiti Kebangsaan Malaysia)
  • Received : 2016.07.28
  • Accepted : 2016.11.16
  • Published : 2017.02.10
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Abstract

The use of fiber reinforced polymer (FRP) for torsional strengthening of reinforced concrete (RC) single cell box beams has been analyzed considerably by researchers worldwide. However, little attention has been paid to torsional strengthening of multicell box girders in terms of both experimental and numerical research. This paper reports the experimental work in an overall investigation for torsional strengthening of multicell box section RC girders with externally-bonded Carbon Fiber Reinforced Polymer CFRP strips. Numerical work was carried out using non-linear finite element modeling (FEM). Good agreement in terms of torque-twist behavior, steel and CFRP reinforcement responses, and crack patterns was achieved. The unique failure modes of all the specimens were modeled correctly as well.

Keywords

References

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  2. Numerical Investigations on Behavior of Strengthened RC Beams with CFRP under Combined Bending and Torsion vol.857, pp.None, 2017, https://doi.org/10.4028/www.scientific.net/kem.857.120
  3. Analytical study on torsional behavior of concrete beams strengthened with fiber reinforced polymer laminates using softened truss model vol.24, pp.8, 2017, https://doi.org/10.1177/1369433220981693
  4. Finite element analysis of rectangular RC beams strengthened with FRP laminates under pure torsion vol.22, pp.4, 2021, https://doi.org/10.1002/suco.202000291