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During an earthquake, ductility is expected to maintain the strength and stiffness of a structure, allowing the building to function even when it is close to collapse. There are four main types of ductility: material, curvature, rotational, and displacement, with the first three relating to local member ductility and displacement ductility concerning the entire structural system. The compatibility of curvature ductility and displacement ductility is addressed in earthquake load regulations through reduction factor parameters and reinforcement design guidelines. Three models of reinforced concrete (RC) frames represent three levels of ductility: Special Moment Resisting Frame (SMRF), Intermediate Moment Resisting Frame (IMRF), and Ordinary Moment Resisting Frame (OMRF). An analysis of the moment-curvature relationship with variations in the reduction factor R, based on SNI 1726- 2019, shows a significant difference, particularly between SMRF and OMRF. The OMRF ductility curvature value decreased by 34.8% due to a 62.5% reduction in R, while IMRF showed a smaller decrease of 17.8% with a 37.5% reduction in R.

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Simulation of Curvature Ductility in Reinforced Concrete Beam with Variation in Reduction Factor According to SNI Code

  • 会议论文

  • 发表日期：

    2025年

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  • Eka Susanti,
  • Dita Kamarul Fitriyah,
  • Yanisfa Septiarsilia,
  • Sarah Fajrin Rahmani,
  • Vivi Rahmawati

摘要

During an earthquake, ductility is expected to maintain the strength and stiffness of a structure, allowing the building to function even when it is close to collapse. There are four main types of ductility: material, curvature, rotational, and displacement, with the first three relating to local member ductility and displacement ductility concerning the entire structural system. The compatibility of curvature ductility and displacement ductility is addressed in earthquake load regulations through reduction factor parameters and reinforcement design guidelines. Three models of reinforced concrete (RC) frames represent three levels of ductility: Special Moment Resisting Frame (SMRF), Intermediate Moment Resisting Frame (IMRF), and Ordinary Moment Resisting Frame (OMRF). An analysis of the moment-curvature relationship with variations in the reduction factor R, based on SNI 1726- 2019, shows a significant difference, particularly between SMRF and OMRF. The OMRF ductility curvature value decreased by 34.8% due to a 62.5% reduction in R, while IMRF showed a smaller decrease of 17.8% with a 37.5% reduction in R.