Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse

In the present study, the use of buckling-restrained braces (BRBs) has been evaluated as a research innovation aimed at reducing the potential of progressive collapse in steel braced frames. These braces prevent the overall buckling of brace and provide much more energy absorption than conventional...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yaghoub Mohammadi, Meysam Bagheripourasil
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	progressive collapse buckling-restrained brace finite element method alternate load path method brb Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/f6c4d81399534ee99c1b7db636b5e814
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f6c4d81399534ee99c1b7db636b5e814
record_format	dspace
spelling	oai:doaj.org-article:f6c4d81399534ee99c1b7db636b5e8142021-11-08T15:54:32ZInvestigation of steel buildings response equipped with buckling-restrained braces against progressive collapse2476-39772538-261610.22065/jsce.2019.153064.1688https://doaj.org/article/f6c4d81399534ee99c1b7db636b5e8142021-04-01T00:00:00Zhttps://www.jsce.ir/article_86778_fc85cefa0ee136c9832c3e1283b9df1e.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In the present study, the use of buckling-restrained braces (BRBs) has been evaluated as a research innovation aimed at reducing the potential of progressive collapse in steel braced frames. These braces prevent the overall buckling of brace and provide much more energy absorption than conventional convertible bracing systems. For this purpose, three-dimensional finite element models of 4, 8, and 12-story buildings were simulated in two modes using ordinary and buckling braces and their response against progressive collapse was evaluated. The progressive collapse analysis was carried out using an alternative load path method and the response of the structures to column removal was investigated. Simulation of models was done using ABAQUS software. Also, the accuracy of the finite element method used in simulating the models was evaluated and a suitable agreement between the results was observed. The most significant results show that in steel frames that have BRBs, less stresses have been created compared with conventional steel braces. In all cases, BRBs with internal energy absorption of the structure have caused lower stresses to other structure member, thereby reducing the potential of progressive collapse. Also, the use of BRBs has reduced the rotation of the beam to column connection, compared to conventional bracing. This effect is especially noticeable in buildings with higher altitudes; the maximum amount of joint rotation corresponding to the 12-story building with BRBs has been reduced by 21% compared with the conventional braces. The reason for this is that, in buckling-restrained braces, the members are able to withstand a pressure above the tensile yield strength, and, unlike ordinary systems, the inherent ductility is due to the occurrence of yield in pressure before it begins to buckle.Yaghoub MohammadiMeysam BagheripourasilIranian Society of Structrual Engineering (ISSE)articleprogressive collapsebuckling-restrained bracefinite element methodalternate load path methodbrbBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 2, Pp 119-140 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	progressive collapse buckling-restrained brace finite element method alternate load path method brb Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	progressive collapse buckling-restrained brace finite element method alternate load path method brb Bridge engineering TG1-470 Building construction TH1-9745 Yaghoub Mohammadi Meysam Bagheripourasil Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
description	In the present study, the use of buckling-restrained braces (BRBs) has been evaluated as a research innovation aimed at reducing the potential of progressive collapse in steel braced frames. These braces prevent the overall buckling of brace and provide much more energy absorption than conventional convertible bracing systems. For this purpose, three-dimensional finite element models of 4, 8, and 12-story buildings were simulated in two modes using ordinary and buckling braces and their response against progressive collapse was evaluated. The progressive collapse analysis was carried out using an alternative load path method and the response of the structures to column removal was investigated. Simulation of models was done using ABAQUS software. Also, the accuracy of the finite element method used in simulating the models was evaluated and a suitable agreement between the results was observed. The most significant results show that in steel frames that have BRBs, less stresses have been created compared with conventional steel braces. In all cases, BRBs with internal energy absorption of the structure have caused lower stresses to other structure member, thereby reducing the potential of progressive collapse. Also, the use of BRBs has reduced the rotation of the beam to column connection, compared to conventional bracing. This effect is especially noticeable in buildings with higher altitudes; the maximum amount of joint rotation corresponding to the 12-story building with BRBs has been reduced by 21% compared with the conventional braces. The reason for this is that, in buckling-restrained braces, the members are able to withstand a pressure above the tensile yield strength, and, unlike ordinary systems, the inherent ductility is due to the occurrence of yield in pressure before it begins to buckle.
format	article
author	Yaghoub Mohammadi Meysam Bagheripourasil
author_facet	Yaghoub Mohammadi Meysam Bagheripourasil
author_sort	Yaghoub Mohammadi
title	Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
title_short	Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
title_full	Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
title_fullStr	Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
title_full_unstemmed	Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
title_sort	investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/f6c4d81399534ee99c1b7db636b5e814
work_keys_str_mv	AT yaghoubmohammadi investigationofsteelbuildingsresponseequippedwithbucklingrestrainedbracesagainstprogressivecollapse AT meysambagheripourasil investigationofsteelbuildingsresponseequippedwithbucklingrestrainedbracesagainstprogressivecollapse
_version_	1718441625705775104

Investigation of steel buildings response equipped with buckling-restrained braces against progressive collapse

Ejemplares similares