Effect of span length on progressive collapse behaviour of steel moment resisting frames

Hashemi Rezvani, Farshad, Yousefi, Amir Mohammad and Ronagh, Hamid Reza (2015) Effect of span length on progressive collapse behaviour of steel moment resisting frames. Structures, 3 81-89. doi:10.1016/j.istruc.2015.03.004

Author Hashemi Rezvani, Farshad
Yousefi, Amir Mohammad
Ronagh, Hamid Reza
Title Effect of span length on progressive collapse behaviour of steel moment resisting frames
Journal name Structures   Check publisher's open access policy
ISSN 2352-0124
Publication date 2015-08-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.istruc.2015.03.004
Open Access Status Not yet assessed
Volume 3
Start page 81
End page 89
Total pages 9
Place of publication Cambridge, MA, United States
Publisher Cell Press
Language eng
Subject 2205 Civil and Structural Engineering
2213 Safety, Risk, Reliability and Quality
2215 Building and Construction
2216 Architecture
Abstract This paper presents results of an investigation into the effect of span length on progressive collapse behaviour of seismically designed steel moment resisting frames which face losing one of their columns in the first story. Towards this aim, several nonlinear static and dynamic analyses were performed for three frames designed for a high seismic zone considering various span lengths. The analysis results revealed that beams and columns of the studied frames had adequate strength to survive one column loss in the first story. However, in order to determine the residual strength of the frame, a series of nonlinear static analyses called pushdown analyses were performed. It was shown that by decreasing the span length to half, the strength of the studied frames increases 1.91 times based on the performance-based analysis perspective. Besides, results of nonlinear static analyses revealed that by increasing the applied loads, the investigated structures are more susceptible to progressive collapse when they lose an internal column.
Keyword Progressive collapse
Span length
Pushdown analysis
Moment resisting frame
Fiber section
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2016 Collection
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