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To prevent structural damage from seismic activity, it is crucial to retrofit the structural elements promptly. Beam-column joints are particularly susceptible to damage as they bear the forces from adjacent beams and columns. The specimens were subjected to reverse cyclic loading to assess This paper proposes a method for upgrading RCC exterior beam-column joints with exterior attached Engineered Cementitious Composites (ECC) and Aramid Fiber Reinforced Polymer (AFRP) sheet at 45° orientation. their strength, ductility, energy absorption, and stiffness degradation. The goal of this work is to use the ABAQUS/CAE (6.14) software to construct a three-dimensional numerical model. The concrete damage plasticity (CDP) model was used to determine the nonlinear properties of concrete by analyzing the reaction of the structure. The findings indicate that better performance is provided with NSM retrofitted specimens with a 45-degree orientation demonstrated significant improvements in all the properties. The mean variance between the results of the experimental testing and the finite element analysis was less than 10%.

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Seismic Retrofitting of RCC Exterior Beam-Column Joints Using ECC and AFRP: A Numerical and Experimental Study

  • 会议论文

  • 发表日期：

    2026年

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  • Praveena Anbazhagan,
  • Thamilselvi Pachiappan

摘要

To prevent structural damage from seismic activity, it is crucial to retrofit the structural elements promptly. Beam-column joints are particularly susceptible to damage as they bear the forces from adjacent beams and columns. The specimens were subjected to reverse cyclic loading to assess This paper proposes a method for upgrading RCC exterior beam-column joints with exterior attached Engineered Cementitious Composites (ECC) and Aramid Fiber Reinforced Polymer (AFRP) sheet at 45° orientation. their strength, ductility, energy absorption, and stiffness degradation. The goal of this work is to use the ABAQUS/CAE (6.14) software to construct a three-dimensional numerical model. The concrete damage plasticity (CDP) model was used to determine the nonlinear properties of concrete by analyzing the reaction of the structure. The findings indicate that better performance is provided with NSM retrofitted specimens with a 45-degree orientation demonstrated significant improvements in all the properties. The mean variance between the results of the experimental testing and the finite element analysis was less than 10%.