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<p>This paper presents an analytical and parametric investigation of seismic performance of an innovative structural fuse system, designed using four identical slit plates. These fuses are strategically positioned at the flange edges on both sides of the beam at the anticipated plastic hinge locations, enhancing the structural performance under lateral loads. The study includes a parametric analysis of beam–column sub-assemblies equipped with single oval slit damper fuses (SOSDF) subjected to quasi-static loading. Key parameters such as damper plate length, number of slits, width of slit, and number of struts are identified as critical factors influencing performance. The results reveal that connections with a greater number of slits demonstrate increased moment-carrying capacity. Among the configurations evaluated, the SOSDF with dimensions 175-10-10 and 200-8-8 (representing damper plate length–number of slits– no. of struts) achieved moment capacity over 1.2 times the plastic moment capacity of the main beam and sustained rotations of up to 0.04&#xa0;radians, classifying them as rigid connections. Under severe seismic events, these systems confine damage to the replaceable fuse components, thereby safeguarding the primary structural members beams and columns. This research highlights the effectiveness of replaceable fuses in enhancing the seismic resilience and energy dissipation capacity of steel structures.</p>

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Seismic performance of beam–column joint with replaceable fuse: an analytical and parametric study

  • 期刊论文

  • 发表日期：

    2026年7月29日

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  • Monedra Pratap,
  • Gaurang R. Vesmawala

摘要

This paper presents an analytical and parametric investigation of seismic performance of an innovative structural fuse system, designed using four identical slit plates. These fuses are strategically positioned at the flange edges on both sides of the beam at the anticipated plastic hinge locations, enhancing the structural performance under lateral loads. The study includes a parametric analysis of beam–column sub-assemblies equipped with single oval slit damper fuses (SOSDF) subjected to quasi-static loading. Key parameters such as damper plate length, number of slits, width of slit, and number of struts are identified as critical factors influencing performance. The results reveal that connections with a greater number of slits demonstrate increased moment-carrying capacity. Among the configurations evaluated, the SOSDF with dimensions 175-10-10 and 200-8-8 (representing damper plate length–number of slits– no. of struts) achieved moment capacity over 1.2 times the plastic moment capacity of the main beam and sustained rotations of up to 0.04 radians, classifying them as rigid connections. Under severe seismic events, these systems confine damage to the replaceable fuse components, thereby safeguarding the primary structural members beams and columns. This research highlights the effectiveness of replaceable fuses in enhancing the seismic resilience and energy dissipation capacity of steel structures.