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<p>One approach to assessing structural performance involves quantifying economic losses incurred during seismic events. This method offers a quantitative definition of performance, yielding comprehensible results for both experts and non-experts. This study delves into the impact of various factors on the seismic economic loss of steel buildings, encompassing moment-resisting frame types, distance from the earthquake source, and building height. Six steel buildings, ranging from 5 to 12 stories, are designed in compliance with Iranian codes, incorporating both Intermediate Moment Frames (IMF) and Special Moment Frames (SMF). The study evaluates the expected lifecycle cost of the examined buildings through a story-based method within a performance-based earthquake engineering framework. Results disclose that the behavioral distinctions between IMF and SMF are more pronounced under Far-Field (FF) seismic records. SMF-equipped buildings exhibit lower losses, with over 85% of the total loss attributed to the “repairable” state. When subjected to FF records, the expected lifetime economic loss of the 5-story IMF building exceeds that of its SMF counterpart by 30%, diminishing to 25% under Near-Field (NF) earthquakes. For 8-story buildings, the lifetime economic loss difference between the two systems is 20% under FF records and 19% under NF records. In the case of 12-story buildings, these values are 10.4% and 8.3%, respectively. The results demonstrate that buildings employing the SMF system exhibit lower lifecycle costs and greater cost-effectiveness compared to those employing the IMF system.</p>

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Comparison of Economic Loss and Cost-Effectiveness of Steel Buildings with Intermediate and Special Moment Frames Under Near-Field and Far-Field Ground Motions

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Behrouz Asgarian,
  • Mohammad Shirzad,
  • Amir Shabani,
  • Saeed Asil Gharebaghi

摘要

One approach to assessing structural performance involves quantifying economic losses incurred during seismic events. This method offers a quantitative definition of performance, yielding comprehensible results for both experts and non-experts. This study delves into the impact of various factors on the seismic economic loss of steel buildings, encompassing moment-resisting frame types, distance from the earthquake source, and building height. Six steel buildings, ranging from 5 to 12 stories, are designed in compliance with Iranian codes, incorporating both Intermediate Moment Frames (IMF) and Special Moment Frames (SMF). The study evaluates the expected lifecycle cost of the examined buildings through a story-based method within a performance-based earthquake engineering framework. Results disclose that the behavioral distinctions between IMF and SMF are more pronounced under Far-Field (FF) seismic records. SMF-equipped buildings exhibit lower losses, with over 85% of the total loss attributed to the “repairable” state. When subjected to FF records, the expected lifetime economic loss of the 5-story IMF building exceeds that of its SMF counterpart by 30%, diminishing to 25% under Near-Field (NF) earthquakes. For 8-story buildings, the lifetime economic loss difference between the two systems is 20% under FF records and 19% under NF records. In the case of 12-story buildings, these values are 10.4% and 8.3%, respectively. The results demonstrate that buildings employing the SMF system exhibit lower lifecycle costs and greater cost-effectiveness compared to those employing the IMF system.