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<p>The innovative structural connections, such as the pin-fuse connection, represent a significant advancement in seismic design, particularly in high-seismic regions. By incorporating sliding and friction mechanisms, the pin-fuse connection effectively dissipates seismic energy, helping to mitigate the forces transmitted through the structure. The proposed pin-fuse connection in this study has a high energy absorption capacity, making it suitable for regions with high seismic activity. In the proposed model, the connection is designed as a real hinge near the beam-column connection with slotted holes, allowing it to rotate and move after reaching a moment that is less than the connection moment. We compared the experimental results of our model under cyclic loads with the numerical results of finite element analysis. These results show that the pin-fuse connection, after reaching the required limit, exhibits enhanced performance due to the elimination of the web's contribution to flexural resistance and the prevention of torsional buckling in the web. Additionally, by creating a reliable fuse away from the beam-column connection, the pin-fuse connection achieves an increase in strength and ductility of 11% and 6%, respectively, while also achieving a relative displacement of up to 9%, which exceeds the Iranian code limit for special moment frames.</p>

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Evaluation of seismic performance of steel frames with pin connections and slotted bolted friction dampers

  • 期刊论文

  • 发表日期：

    2025年9月9日

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  • Alireza Gerayeli,
  • Abdolreza Sarvghad Moghadam,
  • Ehsan Darvishan,
  • Amir Homayoom Kosarieh

摘要

The innovative structural connections, such as the pin-fuse connection, represent a significant advancement in seismic design, particularly in high-seismic regions. By incorporating sliding and friction mechanisms, the pin-fuse connection effectively dissipates seismic energy, helping to mitigate the forces transmitted through the structure. The proposed pin-fuse connection in this study has a high energy absorption capacity, making it suitable for regions with high seismic activity. In the proposed model, the connection is designed as a real hinge near the beam-column connection with slotted holes, allowing it to rotate and move after reaching a moment that is less than the connection moment. We compared the experimental results of our model under cyclic loads with the numerical results of finite element analysis. These results show that the pin-fuse connection, after reaching the required limit, exhibits enhanced performance due to the elimination of the web's contribution to flexural resistance and the prevention of torsional buckling in the web. Additionally, by creating a reliable fuse away from the beam-column connection, the pin-fuse connection achieves an increase in strength and ductility of 11% and 6%, respectively, while also achieving a relative displacement of up to 9%, which exceeds the Iranian code limit for special moment frames.