Assessment of rubber-sliding isolator effect on progressive collapse of bridges

The response of bridges to abnormal loads have always been significant in structural engineering, especially in progressive collapse analysis. In this paper, the performance of bridges, undergoing progressive collapse, with and without isolator is investigated. Nonlinear time history analysis is use...

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Autores principales:	GholamReza Havaei, Seyyed Amirhossein Moayyedi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2016
Materias:	seismic isolator progressive collapse nonlinear dynamic analysis highway bridge Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/440e0860051543c6a9a3a13f2dc93a9d
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spelling	oai:doaj.org-article:440e0860051543c6a9a3a13f2dc93a9d2021-11-08T15:45:57ZAssessment of rubber-sliding isolator effect on progressive collapse of bridges2476-39772538-261610.22065/jsce.2016.38578https://doaj.org/article/440e0860051543c6a9a3a13f2dc93a9d2016-09-01T00:00:00Zhttps://www.jsce.ir/article_38578_f91a36805e9750eb4546eaf8a033a45c.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The response of bridges to abnormal loads have always been significant in structural engineering, especially in progressive collapse analysis. In this paper, the performance of bridges, undergoing progressive collapse, with and without isolator is investigated. Nonlinear time history analysis is used to obtain maximum responses of the structure by considering two different damage scenarios. In the first scenario, it is supposed that the side column of the bridge is collapsed and therefore is detached from the structure while in the second one, the middle column is removed. Accordingly, several models with rubber-sliding isolators, designed according to AASHTO standards are analyzed using OpenSees software. Moreover, the friction parameter of the isolator is considered as a variable in terms of the sliding velocity and acting vertical load. Results show that isolator yield doesn’t occur in both scenarios and subsequently the sliding of the bridge deck is not observed. However, a permanent displacement in the first scenario is detected because of instability of the bridge deck. It can also be noted that in most cases, using seismic isolators results in the growth of the maximum responses.GholamReza HavaeiSeyyed Amirhossein MoayyediIranian Society of Structrual Engineering (ISSE)articleseismic isolatorprogressive collapsenonlinear dynamic analysishighway bridgeBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 3, Iss 2, Pp 113-132 (2016)
institution	DOAJ
collection	DOAJ
language	FA
topic	seismic isolator progressive collapse nonlinear dynamic analysis highway bridge Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	seismic isolator progressive collapse nonlinear dynamic analysis highway bridge Bridge engineering TG1-470 Building construction TH1-9745 GholamReza Havaei Seyyed Amirhossein Moayyedi Assessment of rubber-sliding isolator effect on progressive collapse of bridges
description	The response of bridges to abnormal loads have always been significant in structural engineering, especially in progressive collapse analysis. In this paper, the performance of bridges, undergoing progressive collapse, with and without isolator is investigated. Nonlinear time history analysis is used to obtain maximum responses of the structure by considering two different damage scenarios. In the first scenario, it is supposed that the side column of the bridge is collapsed and therefore is detached from the structure while in the second one, the middle column is removed. Accordingly, several models with rubber-sliding isolators, designed according to AASHTO standards are analyzed using OpenSees software. Moreover, the friction parameter of the isolator is considered as a variable in terms of the sliding velocity and acting vertical load. Results show that isolator yield doesn’t occur in both scenarios and subsequently the sliding of the bridge deck is not observed. However, a permanent displacement in the first scenario is detected because of instability of the bridge deck. It can also be noted that in most cases, using seismic isolators results in the growth of the maximum responses.
format	article
author	GholamReza Havaei Seyyed Amirhossein Moayyedi
author_facet	GholamReza Havaei Seyyed Amirhossein Moayyedi
author_sort	GholamReza Havaei
title	Assessment of rubber-sliding isolator effect on progressive collapse of bridges
title_short	Assessment of rubber-sliding isolator effect on progressive collapse of bridges
title_full	Assessment of rubber-sliding isolator effect on progressive collapse of bridges
title_fullStr	Assessment of rubber-sliding isolator effect on progressive collapse of bridges
title_full_unstemmed	Assessment of rubber-sliding isolator effect on progressive collapse of bridges
title_sort	assessment of rubber-sliding isolator effect on progressive collapse of bridges
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2016
url	https://doaj.org/article/440e0860051543c6a9a3a13f2dc93a9d
work_keys_str_mv	AT gholamrezahavaei assessmentofrubberslidingisolatoreffectonprogressivecollapseofbridges AT seyyedamirhosseinmoayyedi assessmentofrubberslidingisolatoreffectonprogressivecollapseofbridges
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Assessment of rubber-sliding isolator effect on progressive collapse of bridges

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