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Seismic Rehabilitation of Reinforced Concrete Columns with Fiber Reinforcement Polymers (FRP)

Anvari, Hossein | 2008

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 39249 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Kazemi, Mohammad Taghi
  7. Abstract:
  8. Previous researches has established that retrofitting RC (reinforced concrete) columns with FRP (fiber reinforced polymer) jackets is an effective means of providing external confinement to the column cross section. In an effort to evaluate FRP jacketing technology, this study focused on the confinement effectiveness of FRP jackets for rectangular building-type RC columns. Variables investigated include the following: the type of fibers (AFRP, CFRP), the thickness of the jacket, the shape (rectangular or circular) and aspect ratio of the cross section, and the sharpness of the corners of the rectangular cross sections. The sample structures were designed initially without lateral forces and then the vulnerability of those structures were evaluated and rehabilitated by FRP utilization. For square columns, CFRP and AFRP wraps were observed to increase the ultimate axial strength effectively. For 3 story building, ground floor columns and for 5 story building first 2 story columns were vulnerable to seismic loads. Under seismic loads some members passed target deformation. In order to rehabilitate the structure, FRP wraps were applied on columns. The rehabilitated had desired performance levels.
  9. Keywords:
  10. Column Strengthening ; Pushover Analysis ; Fiber Reinforced Polymer (FRP) ;

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