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Behavior of RC Concrete Column Strengthened with CFRP, Steel Jacketand Reinforced Concrete Jacket

Haghdel, Farhad | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 47227 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. Reinforced concrete (RC) column in building often needs strengthening either due to defects in the column themselves, having to support higher loads than those foreseen in the initial design of the structure or as the result of ageing or accidental damage such as earthquake force. The use of FRP wrapping, steel caging or reinforce concrete jacketing for this purpose is now a common practice in many countries throughout the world. Even though a considerable number of researches have been conducted on retrofitting methods during past years, but very limited researches have been done to compare these methods. This research has investigated the effect of jacketing from different views. The objective of this study is to evaluate the performance of each method of strengthening RC columns. In this research the behavior of RC column under axial load and lateral displacement is going to be studied and the acquired result from various methods will be compared with each other. The behavior of strengthened RC column will be analyzed using finite element method. The columnis modeled by ABAQUS software in order to visualize the result.Studying results and modeling show that RC jacket and overall steel jacket have great effect on stiffness and strength of the column along with slightly enhancement in ductility, besides utilizing steel angle and CFRP sheets cause considerable improvement in ductility and energy dissipation plus some growth in strength of the column. Thus in cases where bearing shear force is needed, it is affordable to use concrete jacket and steel plate and wherever increasing ductility required CFRP and steel angle are the best choice
  9. Keywords:
  10. Reinforced Concrete Jacket ; Reinforced Concrete Columns ; Steel Jacketing ; ABAQUS Software ; Carbon Fiber Reinforced Polymer (CFRP) ; Steel Fiber Reinforced Concrete ; Fiber Reinforced Composite

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