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Findings from K.N. Toosi University of Technology in Construction Engineering Reported [Studying the seismic behavior of gate braced frames by...

July 30, 2014



Findings from K.N. Toosi University of Technology in Construction Engineering Reported [Studying the seismic behavior of gate braced frames by incremental dynamic analysis (IDA)]

By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators publish new report on Construction Engineering. According to news originating from Tehran, Iran, by VerticalNews correspondents, research stated, "This paper critically evaluates overstrength, ductility and response modification factors of steel frames with gate bracing. Gate bracing system is a kind of concentric bracing systems."

Our news journalists obtained a quote from the research from the K.N. Toosi University of Technology, "It is similar to chevron (inverted V) bracing except that its diagonal members are not straight. The members of different slopes are joined together at a point to provide enough space for openings. In order to achieve the purpose of this research, several buildings of different stories are considered on soil type II. Static pushover analysis, linear dynamic analysis and nonlinear incremental dynamic analysis are performed by OpenSees software concerning 10 records of past earthquakes. Also, ductility factor, overstrength factor and response modification factor have been calculated for gate bracing system. The values of 3.5 and 5 are suggested for response modification factor in ultimate limit state and allowable stress methods, respectively. The fragility curves were plotted for the first time for such kind of braces."

According to the news editors, the research concluded: "It should be mentioned that these curves play significant roles in evaluating seismic damage of buildings."

For more information on this research see: Studying the seismic behavior of gate braced frames by incremental dynamic analysis (IDA). Journal of Constructional Steel Research, 2014;99():111-120. Journal of Constructional Steel Research can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Journal of Constructional Steel Research - www.elsevier.com/wps/product/cws_home/405901)

The news correspondents report that additional information may be obtained from N. Fanaie, KN Toosi Univ Technol, Tehran 19697, Iran.

Keywords for this news article include: Tehran, Iran, Asia, Construction Engineering

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Source: Journal of Engineering


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