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To investigate how shear span ratio, horizontal reinforcement ratio, and height-to-thickness ratio affect the seismic performance of CFRP reinforced concrete (CFRP-RC) shear walls, 28 CFRP-RC shear walls were modeled and analyzed in this paper. Key performance indicators such as stiffness and strength degradation, softening rate, ductility, maximum displacement ratio, cumulative energy dissipation, and residual deformation were evaluated. The findings indicate that increasing the horizontal reinforcement and shear span ratios while decreasing the height-to-thickness ratio significantly reduces size effects. Compared to traditional reinforced concrete (RC) shear walls, CFRP-RC shear walls show less residual deformation, better self-recovery, and faster structural restoration after earthquakes. The size effect formula proposed by Jin et al. was refined and validated with these results, showing good consistency and confirming the formula's accuracy and validity.

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Investigation on Seismic Performance and Size Effect in CFRP-Reinforced Concrete Shear Walls

  • 会议论文

  • 发表日期：

    2025年

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  • Bo Li,
  • Fengjuan Chen,
  • Dong Li,
  • Liu Jin,
  • Xiuli Du

摘要

To investigate how shear span ratio, horizontal reinforcement ratio, and height-to-thickness ratio affect the seismic performance of CFRP reinforced concrete (CFRP-RC) shear walls, 28 CFRP-RC shear walls were modeled and analyzed in this paper. Key performance indicators such as stiffness and strength degradation, softening rate, ductility, maximum displacement ratio, cumulative energy dissipation, and residual deformation were evaluated. The findings indicate that increasing the horizontal reinforcement and shear span ratios while decreasing the height-to-thickness ratio significantly reduces size effects. Compared to traditional reinforced concrete (RC) shear walls, CFRP-RC shear walls show less residual deformation, better self-recovery, and faster structural restoration after earthquakes. The size effect formula proposed by Jin et al. was refined and validated with these results, showing good consistency and confirming the formula's accuracy and validity.