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Yousefnejad, Arjang, Darvishan, Ehsan, Rajabi, Elham, Shakouri, Ayoob. (1404). Assessment of Progressive Collapse in Buildings with Special Steel Moment Frames Considering Sudden Column Removal Time. , (), -. doi: 10.22059/ceij.2026.392785.2285
Arjang Yousefnejad; Ehsan Darvishan; Elham Rajabi; Ayoob Shakouri. "Assessment of Progressive Collapse in Buildings with Special Steel Moment Frames Considering Sudden Column Removal Time". , , , 1404, -. doi: 10.22059/ceij.2026.392785.2285
Yousefnejad, Arjang, Darvishan, Ehsan, Rajabi, Elham, Shakouri, Ayoob. (1404). 'Assessment of Progressive Collapse in Buildings with Special Steel Moment Frames Considering Sudden Column Removal Time', , (), pp. -. doi: 10.22059/ceij.2026.392785.2285
Yousefnejad, Arjang, Darvishan, Ehsan, Rajabi, Elham, Shakouri, Ayoob. Assessment of Progressive Collapse in Buildings with Special Steel Moment Frames Considering Sudden Column Removal Time. , 1404; (): -. doi: 10.22059/ceij.2026.392785.2285

Assessment of Progressive Collapse in Buildings with Special Steel Moment Frames Considering Sudden Column Removal Time

Civil Engineering Infrastructures Journal
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 08 بهمن 1404    اصل مقاله (1.76 M)
شناسه دیجیتال (DOI): 10.22059/ceij.2026.392785.2285
نویسندگان
Arjang Yousefnejad1؛ Ehsan Darvishan* 1؛ Elham Rajabi2؛ Ayoob Shakouri3
1Department of Civil Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran
2(1) Department of Civil Engineering, Tafresh University, 39518-79611 Tafresh, Iran (2) Qualitative and Quantitative Analysis of Fluids and Environmental Research Group, Tafresh University, 39518-79611 Tafresh, Iran
3Department of Civil Engineering, University of British Columbia, Canada
چکیده
In the technical literature of structural and earthquake engineering, the phenomenon of progressive collapse is not directly incorporated into calculations; analysis, design processes, and many researchers consider this phenomenon as an additional load. Despite the importance of this issue in the seismic behavior of structures, design codes ignore the consideration of this phenomenon. Therefore, this paper analyzes the nonlinear behavior of a 4-story structure containing a special moment-resisting frame under progressive collapse loads. In this regard, three types of scenarios for the removal of corner, middle, and peripheral columns on the ground floor are considered, with 32 different column removal times including very rapid times and times close to the natural period of the structure applied to the studied model in the nonlinear OpenSees. The results indicate that as the column removal time increases, the maximum stress values in beams and columns, vertical displacement, beam rotation, and residual vertical displacement decrease. On the other hand, the difference in maximum displacement values at maximum and minimum times for scenarios1,2,and 3 is 81%,92%,and37% respectively, and for residual displacements, it is 61%,82%,and34%. Meanwhile, the difference in maximum rotations generated in the beam at maximum and minimum times for scenario 1 is nearly 5-times.
کلیدواژه‌ها
Progressive Collapse؛ Nonlinear Dynamic Analysis؛ Column Removal Time؛ Steel Moment Frame؛ Special Steel Moment Frames
آمار
تعداد مشاهده مقاله: 67
تعداد دریافت فایل اصل مقاله: 109





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