Response of steel box columns in fire conditions

Effect of elevated temperatures on the mechanical properties of steel, brings the importance of investigating the effect of fire on the steel structures anxiously. Columns, as the main load-carrying part of a structure, can be highly vulnerable to the fire. In this study, the behavior of steel gravi...

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Autores principales:	Mahmood Yahyai, Abbas Rezaeian, Mahdi Safaeian
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	steel column local buckling critical temperature finite element method fire Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/24965b7fbe3740b59988d8cb8b48fbda
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spelling	oai:doaj.org-article:24965b7fbe3740b59988d8cb8b48fbda2021-11-08T15:46:28ZResponse of steel box columns in fire conditions2476-39772538-261610.22065/jsce.2017.44333https://doaj.org/article/24965b7fbe3740b59988d8cb8b48fbda2017-05-01T00:00:00Zhttps://www.jsce.ir/article_44333_6a5c734b857538a24f8f34e7e6596679.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Effect of elevated temperatures on the mechanical properties of steel, brings the importance of investigating the effect of fire on the steel structures anxiously. Columns, as the main load-carrying part of a structure, can be highly vulnerable to the fire. In this study, the behavior of steel gravity columns with box cross section exposed to fire has been investigated. These kinds of columns are widely used in common steel structures design in Iran. In current study, the behavior of such columns in fire conditions is investigated through the finite element method. To perform this, the finite element model of a steel column which has been previously tested under fire condition, was prepared. Experimental loading and boundary conditions were considered in the model and was analyzed. Results were validated by experimental data and various specimens of gravity box columns were designed according to the Iran’s steel buildings code, and modeled and analyzed using Abaqus software. The effect of width to thickness ratio of column plates, the load ratio and slenderness on the ultimate strength of the column was investigated, and the endurance time was estimated under ISO 834 standard fire curve. The results revealed that an increase in width to thickness ratio and load ratio leads to reduction of endurance time and the effect of width to thickness ratio on the ultimate strength of the column decreases with temperature increase.Mahmood YahyaiAbbas RezaeianMahdi SafaeianIranian Society of Structrual Engineering (ISSE)articlesteel columnlocal bucklingcritical temperaturefinite element methodfireBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss 1, Pp 101-112 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	steel column local buckling critical temperature finite element method fire Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	steel column local buckling critical temperature finite element method fire Bridge engineering TG1-470 Building construction TH1-9745 Mahmood Yahyai Abbas Rezaeian Mahdi Safaeian Response of steel box columns in fire conditions
description	Effect of elevated temperatures on the mechanical properties of steel, brings the importance of investigating the effect of fire on the steel structures anxiously. Columns, as the main load-carrying part of a structure, can be highly vulnerable to the fire. In this study, the behavior of steel gravity columns with box cross section exposed to fire has been investigated. These kinds of columns are widely used in common steel structures design in Iran. In current study, the behavior of such columns in fire conditions is investigated through the finite element method. To perform this, the finite element model of a steel column which has been previously tested under fire condition, was prepared. Experimental loading and boundary conditions were considered in the model and was analyzed. Results were validated by experimental data and various specimens of gravity box columns were designed according to the Iran’s steel buildings code, and modeled and analyzed using Abaqus software. The effect of width to thickness ratio of column plates, the load ratio and slenderness on the ultimate strength of the column was investigated, and the endurance time was estimated under ISO 834 standard fire curve. The results revealed that an increase in width to thickness ratio and load ratio leads to reduction of endurance time and the effect of width to thickness ratio on the ultimate strength of the column decreases with temperature increase.
format	article
author	Mahmood Yahyai Abbas Rezaeian Mahdi Safaeian
author_facet	Mahmood Yahyai Abbas Rezaeian Mahdi Safaeian
author_sort	Mahmood Yahyai
title	Response of steel box columns in fire conditions
title_short	Response of steel box columns in fire conditions
title_full	Response of steel box columns in fire conditions
title_fullStr	Response of steel box columns in fire conditions
title_full_unstemmed	Response of steel box columns in fire conditions
title_sort	response of steel box columns in fire conditions
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/24965b7fbe3740b59988d8cb8b48fbda
work_keys_str_mv	AT mahmoodyahyai responseofsteelboxcolumnsinfireconditions AT abbasrezaeian responseofsteelboxcolumnsinfireconditions AT mahdisafaeian responseofsteelboxcolumnsinfireconditions
_version_	1718441643730796544

Response of steel box columns in fire conditions

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