The aging of structural elements leads to deterioration of the structure. Retrofitting provides both safety and longevity making it a practical solution for preserving and enhancing structural integrity. Retrofitting is the process of strengthening existing structures, like RC columns, to improve load capacity, durability and safety. It uses techniques like jacketing or fiber wrapping to enhance performance, making structures more resilient without needing replacement. This study investigates the effectiveness of retrofitting techniques for reinforced concrete (RC) columns under axial loads to improve their load bearing capacity and structural resilience. The study focuses on retrofitting methods like jacketing (RCJ) and wrapping (RCW) with fiber reinforced polymer (FRP). Using numerical analysis in ABAQUS software, the load displacement behavior was evaluated, highlighting the maximum displacement and maximum principal stress. The maximum displacement for RC, RCJ and RCW are 1.45 mm, 2.45 mm, and 1.8 mm respectively. The maximum principal stress for RC, RCJ and RCW are 4.17 N/mm2, 4.25 N/mm2 and 4.13 N/mm2 respectively. From the study RCW increases by 166.66% compared to RC. According to these findings jacketing is the best fit for RC column.

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Performance Evaluation of Retrofitting Techniques in RC Column Using Numerical Analysis

  • S. Sindhu Nachiar,
  • S. Anandh,
  • S. S. Kiruthik Sekar,
  • M. Kumaresan

摘要

The aging of structural elements leads to deterioration of the structure. Retrofitting provides both safety and longevity making it a practical solution for preserving and enhancing structural integrity. Retrofitting is the process of strengthening existing structures, like RC columns, to improve load capacity, durability and safety. It uses techniques like jacketing or fiber wrapping to enhance performance, making structures more resilient without needing replacement. This study investigates the effectiveness of retrofitting techniques for reinforced concrete (RC) columns under axial loads to improve their load bearing capacity and structural resilience. The study focuses on retrofitting methods like jacketing (RCJ) and wrapping (RCW) with fiber reinforced polymer (FRP). Using numerical analysis in ABAQUS software, the load displacement behavior was evaluated, highlighting the maximum displacement and maximum principal stress. The maximum displacement for RC, RCJ and RCW are 1.45 mm, 2.45 mm, and 1.8 mm respectively. The maximum principal stress for RC, RCJ and RCW are 4.17 N/mm2, 4.25 N/mm2 and 4.13 N/mm2 respectively. From the study RCW increases by 166.66% compared to RC. According to these findings jacketing is the best fit for RC column.