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<p>Dampers are effective tools for dissipating energy and reducing structural displacement. This study investigates the role of viscous and magneto-rheological (MR) dampers, applied with a passive control approach, in improving the progressive collapse resistance of a steel moment frame structure. Dampers were placed diagonally along the perimeter of the top floor, and their performance was assessed through capacity curve analysis. Results show that both dampers enhance robustness under different column removal scenarios, with MR dampers having a stronger effect. For viscous dampers, increasing the damping ratio improved stiffness and reduced displacement, though the benefit diminished beyond a certain stiffness threshold. These findings emphasize the potential of damper-based strategies for mitigating progressive collapse and guiding practical design.</p>

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Investigating the effect of horizontal dampers arrangement pattern in the steel moment frame structure on the progressive collapse potential

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  • 发表日期：

    2025年11月19日

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  • Moein Nosrati

摘要

Dampers are effective tools for dissipating energy and reducing structural displacement. This study investigates the role of viscous and magneto-rheological (MR) dampers, applied with a passive control approach, in improving the progressive collapse resistance of a steel moment frame structure. Dampers were placed diagonally along the perimeter of the top floor, and their performance was assessed through capacity curve analysis. Results show that both dampers enhance robustness under different column removal scenarios, with MR dampers having a stronger effect. For viscous dampers, increasing the damping ratio improved stiffness and reduced displacement, though the benefit diminished beyond a certain stiffness threshold. These findings emphasize the potential of damper-based strategies for mitigating progressive collapse and guiding practical design.