Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames

Nowadays, the using of steel moment frames has been considered as an effective lateral load-resisting system against seismic forces. In this research, the effect of plastic hinges modelling of fully restrained connections has been evaluated on the strength of steel moment frame structures against pr...

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Autores principales:	Mohammad Saghaie Sahebalzaman, Mohammad Reza Sheidaii, Alireza Salmasi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	progressive collapse steel moment frame plastic hinge alternative path method nonlinear static analysis Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/29aec617207640b09956e08517c53523
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spelling	oai:doaj.org-article:29aec617207640b09956e08517c535232021-11-08T15:54:19ZEffects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames2476-39772538-261610.22065/jsce.2019.184813.1855https://doaj.org/article/29aec617207640b09956e08517c535232021-03-01T00:00:00Zhttps://www.jsce.ir/article_88123_690b25e993b6f00dc87783ff392f2c0b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Nowadays, the using of steel moment frames has been considered as an effective lateral load-resisting system against seismic forces. In this research, the effect of plastic hinges modelling of fully restrained connections has been evaluated on the strength of steel moment frame structures against progressive collapse. In order to assessment of the progressive collapse performance of sample structures, two structural models of 3 and 5-story buildings were designed and then the definition and modelling of plastic hinges have been done in two different modes. In the first mode, plastic hinges were modelled only for the beam and column members. In the second mode, plastic hinges were considered for the connections in addition to the beam and column members. The Five different types of investigated connections included WFP, WBH, WCPinWUF, WUF-B, Welded top and bottom haunch. The progressive collapse resistance of these buildings against sudden removal of internal and external column was separately studied using nonlinear static alternate path method presented in the UFC standard. The results of analysis indicated that if the plastic hinges of connections are separately defined in addition to the plastic hinges of beams and columns, the structure will have lower progressive collapse strength, and the resistance of the structure tends to its actual value. Simultaneous modelling of plastic hinges for connections and members at least 20% and maximum 37% affects the reduction of structural strength against progreive collapse. Therefore, the modelling of plastic hinges for connections and members simultaneously should be considered as a important regulation. According to the comparative results, the WCPinWUF and WUF-B connection respectively demonstrated that the most desirable behaviour and the weakest performance against the progressive collapses.Mohammad Saghaie SahebalzamanMohammad Reza SheidaiiAlireza SalmasiIranian Society of Structrual Engineering (ISSE)articleprogressive collapsesteel moment frameplastic hingealternative path methodnonlinear static analysisBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 1, Pp 327-342 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	progressive collapse steel moment frame plastic hinge alternative path method nonlinear static analysis Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	progressive collapse steel moment frame plastic hinge alternative path method nonlinear static analysis Bridge engineering TG1-470 Building construction TH1-9745 Mohammad Saghaie Sahebalzaman Mohammad Reza Sheidaii Alireza Salmasi Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
description	Nowadays, the using of steel moment frames has been considered as an effective lateral load-resisting system against seismic forces. In this research, the effect of plastic hinges modelling of fully restrained connections has been evaluated on the strength of steel moment frame structures against progressive collapse. In order to assessment of the progressive collapse performance of sample structures, two structural models of 3 and 5-story buildings were designed and then the definition and modelling of plastic hinges have been done in two different modes. In the first mode, plastic hinges were modelled only for the beam and column members. In the second mode, plastic hinges were considered for the connections in addition to the beam and column members. The Five different types of investigated connections included WFP, WBH, WCPinWUF, WUF-B, Welded top and bottom haunch. The progressive collapse resistance of these buildings against sudden removal of internal and external column was separately studied using nonlinear static alternate path method presented in the UFC standard. The results of analysis indicated that if the plastic hinges of connections are separately defined in addition to the plastic hinges of beams and columns, the structure will have lower progressive collapse strength, and the resistance of the structure tends to its actual value. Simultaneous modelling of plastic hinges for connections and members at least 20% and maximum 37% affects the reduction of structural strength against progreive collapse. Therefore, the modelling of plastic hinges for connections and members simultaneously should be considered as a important regulation. According to the comparative results, the WCPinWUF and WUF-B connection respectively demonstrated that the most desirable behaviour and the weakest performance against the progressive collapses.
format	article
author	Mohammad Saghaie Sahebalzaman Mohammad Reza Sheidaii Alireza Salmasi
author_facet	Mohammad Saghaie Sahebalzaman Mohammad Reza Sheidaii Alireza Salmasi
author_sort	Mohammad Saghaie Sahebalzaman
title	Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
title_short	Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
title_full	Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
title_fullStr	Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
title_full_unstemmed	Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
title_sort	effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/29aec617207640b09956e08517c53523
work_keys_str_mv	AT mohammadsaghaiesahebalzaman effectsofplastichingesmodellingoffullyrestrainedconnectionsintheprogressivecollapseresistanceofsteelmomentframes AT mohammadrezasheidaii effectsofplastichingesmodellingoffullyrestrainedconnectionsintheprogressivecollapseresistanceofsteelmomentframes AT alirezasalmasi effectsofplastichingesmodellingoffullyrestrainedconnectionsintheprogressivecollapseresistanceofsteelmomentframes
_version_	1718441554606030848

Effects of plastic hinges modelling of fully restrained connections in the progressive collapse resistance of steel moment frames

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