Effect of seismic design level on safety against progressive collapse of concentrically braced frames

Hashemi Rezvani, Farshad and Asgarian, Behrouz (2014) Effect of seismic design level on safety against progressive collapse of concentrically braced frames. Steel and Composite Structures, 16 2: 135-156. doi:10.12989/scs.2014.16.2.135

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads

Author Hashemi Rezvani, Farshad
Asgarian, Behrouz
Title Effect of seismic design level on safety against progressive collapse of concentrically braced frames
Journal name Steel and Composite Structures   Check publisher's open access policy
ISSN 1229-9367
1598-6233
Publication date 2014
Sub-type Article (original research)
DOI 10.12989/scs.2014.16.2.135
Open Access Status
Volume 16
Issue 2
Start page 135
End page 156
Total pages 22
Place of publication Daejeon, Republic of Korea
Publisher Techno-Press
Collection year 2015
Language eng
Formatted abstract
In this research the effect of seismic design level as a practical approach for progressive collapse mitigation and reaching desired structural safety against it in seismically designed concentric braced frame buildings was investigated. It was achieved by performing preliminary and advanced progressive collapse analysis of several split-X braced frame buildings, designed for each seismic zone according to UBC 97 and by applying various Seismic Load Factors (SLFs). The outer frames of such structures were studied for collapse progression while losing one column and connected brace in the first story. Preliminary analysis results showed the necessity of performing advanced element loss analysis, consisting of Vertical Incremental Dynamic Analysis (VIDA) and Performance-Based Analysis (PBA), in order to compute the progressive collapse safety of the structures while increasing SLF for each seismic zone. In addition, by sensitivity analysis it became possible to introduce the equation of structural safety against progressive collapse for concentrically braced frames as a function of SLF for each seismic zone. Finally, the equation of progressive collapse safety as a function of bracing member capacity was presented.
Keyword Progressive collapse
Structural safety
Failure
Performance
Seismic load factor
Vertical incremental dynamic analysis
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 2015 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 05 Mar 2014, 15:21:57 EST by Jeannette Watson on behalf of School of Civil Engineering