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To improve the seismic performance of reinforced concrete (RC) members, it is necessary to give sufficient consideration not only to the strength but also to the ductility. In this study, a new ductility improving measure for RC piers was proposed by using longitudinal reinforcement with a pre-deformed inward bending at the plastic hinges. In addition, the full-scale models of RC pier tests were conducted. Lateral cyclic loading experiments for normal specimen and ductility-improving specimen were conducted to investigate the effectiveness of the proposed measure. Their performances were investigated in terms of failure mode, hysteretic properties, and ductility. The results showed that the proposed method could improve the bearing capacity and ductility.

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Experimental Assessment Ductility of Reinforced Concrete Pier with Pre-deformed Reinforcement Under Cyclic Loading

  • 会议论文

  • 发表日期：

    2025年

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  • Wenming Wang,
  • Hiroki Tamai,
  • Lu Chi,
  • Yoshimi Sonoda

摘要

To improve the seismic performance of reinforced concrete (RC) members, it is necessary to give sufficient consideration not only to the strength but also to the ductility. In this study, a new ductility improving measure for RC piers was proposed by using longitudinal reinforcement with a pre-deformed inward bending at the plastic hinges. In addition, the full-scale models of RC pier tests were conducted. Lateral cyclic loading experiments for normal specimen and ductility-improving specimen were conducted to investigate the effectiveness of the proposed measure. Their performances were investigated in terms of failure mode, hysteretic properties, and ductility. The results showed that the proposed method could improve the bearing capacity and ductility.