Research Article Open Access

Fire Evaluation of RC Frames Strengthened with FRPs Using Finite Element Method

Reza Salehi1, Abbas Akbarpour1 and Armaghan Shalbaftabar2
  • 1 South Tehran Branch Islamic Azad University, Iran
  • 2 North Carolina A&T State University, United States

Abstract

Reinforced Concrete (RC) structures may confront with extreme loading conditions. Sometimes, structures are not only under extreme loading such as earthquakes but also, they may be subjected to fire. Therefore, investigation of reinforced concrete structures which are the most common ones is essential. In this study, experimental RC frame is considered to validate in ABAQUS finite element software. RC frame is subjected to both earthquake and fire loading condition to assess the seismic behavior of structure under extreme conditions. FRP techniques is also consider evaluating the seismic behavior such as load capacity, ductility, energy absorption and stiffness. In this regard, two different approaches including reinforcing and wrapping are employed. In this research, the pattern of retrofitting and reinforcing are the novelty of this work. In fact, the effect of using steel bars, BFRP bars and sheets are evaluated. The new method for combination of steel-BFRP bars and different BFRP sheet’s angle as divergence and convergence are investigated. After carrying out the load-displacement diagrams, the seismic parameters of RC frames are compared and the optimized method and model is presented.

American Journal of Engineering and Applied Sciences
Volume 13 No. 4, 2020, 610-626

DOI: https://doi.org/10.3844/ajeassp.2020.610.626

Submitted On: 8 September 2020 Published On: 5 October 2020

How to Cite: Salehi, R., Akbarpour, A. & Shalbaftabar, A. (2020). Fire Evaluation of RC Frames Strengthened with FRPs Using Finite Element Method. American Journal of Engineering and Applied Sciences, 13(4), 610-626. https://doi.org/10.3844/ajeassp.2020.610.626

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Keywords

  • Reinforced Concrete (RC) Frame
  • Fire
  • FRP Bars and Sheets
  • Finite Element Method