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<p>This study presents a comparative numerical investigation of reinforced concrete (RC) shear walls retrofitted using two externally bonded reinforcement (EBR) techniques: the conventional EBR method and the externally bonded reinforcement on grooves (EBROG) technique. Finite element models were developed in Abaqus to simulate the structural behavior of the retrofitted walls under lateral loading. Carbon fiber reinforced polymer (CFRP) sheets were modeled as retrofitting material, and the concrete damage plasticity (CDP) model was employed to capture the nonlinear behavior of concrete. The results show that the wall retrofitted with the EBROG technique exhibited approximately 25% greater lateral load resistance and 1.3 times higher ultimate load capacity compared to the wall strengthened with the traditional EBR method. Furthermore, the EBROG-retrofitted wall demonstrated better deformation control and more uniform crack distribution. These findings suggest that the EBROG technique is an effective solution for enhancing the seismic performance of RC shear walls.</p>

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Finite element analysis of FRP-retrofitted concrete shear walls using the EBROG technique

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Hamed Shahbazi Saraei,
  • Panam Zarfam,
  • Mohammadreza Mansoori

摘要

This study presents a comparative numerical investigation of reinforced concrete (RC) shear walls retrofitted using two externally bonded reinforcement (EBR) techniques: the conventional EBR method and the externally bonded reinforcement on grooves (EBROG) technique. Finite element models were developed in Abaqus to simulate the structural behavior of the retrofitted walls under lateral loading. Carbon fiber reinforced polymer (CFRP) sheets were modeled as retrofitting material, and the concrete damage plasticity (CDP) model was employed to capture the nonlinear behavior of concrete. The results show that the wall retrofitted with the EBROG technique exhibited approximately 25% greater lateral load resistance and 1.3 times higher ultimate load capacity compared to the wall strengthened with the traditional EBR method. Furthermore, the EBROG-retrofitted wall demonstrated better deformation control and more uniform crack distribution. These findings suggest that the EBROG technique is an effective solution for enhancing the seismic performance of RC shear walls.