Structural Engineering and Mechanics

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Finite element analysis of shear-deficient RC beams strengthened with CFRP strips/sheets

  • Lee, H.K. (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Ha, S.K. (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Afzal, M. (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2007.09.22
  • Accepted : 2008.08.18
  • Published : 2008.09.30
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Abstract

Performance of shear-deficient reinforced concrete (RC) beams strengthened with carbon fiber-reinforced polymer (CFRP) strips/sheets is analyzed through numerical simulations on four-point bending tests. The numerical simulations are carried out using the finite element (FE) program ABAQUS. A micromechanics-based constitutive model (Liang et al. 2006) is implemented into the FE program ABAQUS to model CFRP strips/sheets. The predicted results are compared with experiment data (Khalifa and Nanni 2002) to assess the accuracy of the proposed FE analysis approach. A series of numerical tests are conducted to investigate the influence of stirrup lay-ups on the shear strengthening performance of the CFRP strips/sheets, to illustrate the influence of the damage parameters on the microcrack density evolution in concrete, and to investigate the shear and flexural strengthening performance of CFRP strips/ sheets. It has been shown that the proposed FE analysis approach is suitable for the performance prediction of RC beams strengthened with CFRP strips/sheets.

Keywords

References

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