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<p>In order to address the limitations of conventional reinforced concrete walls for low- to mid-rise buildings, this study proposes a novel Replaceable precast concrete Wall with Ring Damper (RWRD). The system employs replaceable ring steel dampers at wall panel connections to provide stable energy dissipation while protecting primary structural elements from damage. Finite element and fiber element models of low-, low- to mid-, and mid-rise buildings incorporating both the RWRD system and conventional wall systems were developed and subjected to cyclic and earthquake loading. Various wall and damper configurations were examined to identify optimal arrangements for different building heights. The results show that the proposed RWRD system exhibits stable hysteresis behavior with minimal pinching, localized damage confined to replaceable dampers, and negligible degradation of strength and stiffness even at large drift levels. Compared with conventional reinforced concrete walls, the optimum solution of RWRD system reduces roof displacements by up to 32%, inter-story drift ratios by up to 36%, and floor accelerations by up to 54%. These improvements enhance both structural and non-structural performance while minimizing downtime and repair costs. Overall, the findings confirm that the RWRD system offers a practical, low-damage, and demountable solution for low- to mid-rise buildings in high seismic regions.</p>

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Seismic protection of low- to mid-rise buildings using a replaceable wall system with ring steel dampers

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Oday Jawad Kadhim,
  • Mojtaba Fathi,
  • Afshin Naserpour

摘要

In order to address the limitations of conventional reinforced concrete walls for low- to mid-rise buildings, this study proposes a novel Replaceable precast concrete Wall with Ring Damper (RWRD). The system employs replaceable ring steel dampers at wall panel connections to provide stable energy dissipation while protecting primary structural elements from damage. Finite element and fiber element models of low-, low- to mid-, and mid-rise buildings incorporating both the RWRD system and conventional wall systems were developed and subjected to cyclic and earthquake loading. Various wall and damper configurations were examined to identify optimal arrangements for different building heights. The results show that the proposed RWRD system exhibits stable hysteresis behavior with minimal pinching, localized damage confined to replaceable dampers, and negligible degradation of strength and stiffness even at large drift levels. Compared with conventional reinforced concrete walls, the optimum solution of RWRD system reduces roof displacements by up to 32%, inter-story drift ratios by up to 36%, and floor accelerations by up to 54%. These improvements enhance both structural and non-structural performance while minimizing downtime and repair costs. Overall, the findings confirm that the RWRD system offers a practical, low-damage, and demountable solution for low- to mid-rise buildings in high seismic regions.