Analyzing and Enhancing the Resilience of Steel Moment Frame Structures Against Progressive Collapse

Journal Title: Journal of Operational and Strategic Analytics - Year 2023, Vol 1, Issue 2

Abstract

The present study scrutinizes the decision-making strategies and enhancement techniques aimed at minimizing progressive collapse in steel moment frame structures. Comparative analyses of both three-story and five-story frames were carried out, focusing on the reinforcement of external frames through the introduction of bracing. Employing ABAQUS, a sophisticated finite element software, simulations of these frames resulted in the exploration of 16 unique steel frame configurations. In an assessment of column loss impact, the middle column of the lowest story in the supporting frame was deliberately removed. Findings reveal that the axial force of the beams adjacent to the removal site in the three-story frame escalates approximately 2.15 times in relation to the values connected with corner beam extraction. Conversely, the increase in axial force of the beams adjacent to the column removal in the five-story frame varied between 5% and 49% of the respective values for beam removal conditions. Furthermore, a reduction in maximum displacement was found to correlate with an increase in the number of stories. Maximum displacements in five-story frames were observed to be roughly 7% to 22% of the corresponding values in three-story frames, with variability depending on the location of the removed column. These results indicate that the effectiveness of bracing-based reinforcement to prevent progressive collapse in steel moment frame structures intensifies with the increase in the number of stories. This performance enhancement against progressive collapse becomes particularly significant for structures comprising a higher number of stories.

Authors and Affiliations

Hadi Faghihmaleki, Fatemeh Habibpour, Ashkan Rah Anjam

Keywords

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  • EP ID EP731955
  • DOI https://doi.org/10.56578/josa010206
  • Views 60
  • Downloads 0

How To Cite

Hadi Faghihmaleki, Fatemeh Habibpour, Ashkan Rah Anjam (2023). Analyzing and Enhancing the Resilience of Steel Moment Frame Structures Against Progressive Collapse. Journal of Operational and Strategic Analytics, 1(2), -. https://europub.co.uk/articles/-A-731955