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This study focuses on the design and evaluation of rocking steel coupled frames used as a dissipative exoskeleton for seismic retrofitting of RC buildings, using a real case-study school building. The design employs a displacement-based approach, with the structural fuses made of dumbbell-shaped steel strips selected to prevent stress concentration, plastic strain accumulation, and buckling failures. The retrofit strategy's effectiveness is validated through nonlinear time-history analyses with different earthquake ground motion scenarios.

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Rocking Steel Coupled Frames for Seismic Retrofit of RC Buildings

  • 会议论文

  • 发表日期：

    2025年

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  • Massimiliano Ferraioli,
  • Osvaldo Pecorari,
  • Simeone Parolisi,
  • Alberto Mandara

摘要

This study focuses on the design and evaluation of rocking steel coupled frames used as a dissipative exoskeleton for seismic retrofitting of RC buildings, using a real case-study school building. The design employs a displacement-based approach, with the structural fuses made of dumbbell-shaped steel strips selected to prevent stress concentration, plastic strain accumulation, and buckling failures. The retrofit strategy's effectiveness is validated through nonlinear time-history analyses with different earthquake ground motion scenarios.