Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration

Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration

In this study, some researches about end rigid zones parameters and column removal duration in progressive collapse reinforced concrete frames are taken place. Due to massive dimensions of beams and columns in reinforced concrete frames, the effect of end rigid zones cannot be ignored. Column remova...

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Autores principales: Hamid Reza Ashrafi, Seyed Ali Hassanzadeh
Formato: article
Lenguaje:FA
Publicado: Iranian Society of Structrual Engineering (ISSE) 2018
Materias:
progressive collapse
reinforced concrete frame
end rigid zones
column removal duration
nonlinear dynamic analysis
vertical stiffness
Bridge engineering
TG1-470
Building construction
TH1-9745
Acceso en línea:https://doaj.org/article/61249f9266a24622900a05ac4ace5f48
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spelling oai:doaj.org-article:61249f9266a24622900a05ac4ace5f482021-11-08T15:50:37ZInvestigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration2476-39772538-261610.22065/jsce.2017.86030.1172https://doaj.org/article/61249f9266a24622900a05ac4ace5f482018-10-01T00:00:00Zhttps://www.jsce.ir/article_48948_972e3c65b91f4eadc78537a752b464ed.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In this study, some researches about end rigid zones parameters and column removal duration in progressive collapse reinforced concrete frames are taken place. Due to massive dimensions of beams and columns in reinforced concrete frames, the effect of end rigid zones cannot be ignored. Column removal duration is one of the variables that can have different values considering the cause of an accident in which this study it is assessed in conditions such as suddenly, standard and gradually removal. Therefore, two 4- and 8-storey reinforced concrete frames are designed via OpenSees Software. The impact of end rigid zones and column removal duration in either frames has been evaluated by removal of the middle and corner column. In order to evaluate end rigid zones for determining vertical stiffness of structure and beams rotation considering performance level, nonlinear dynamic analysis is used. In addition, to assess structural capacity, nonlinear static analysis of increasing load is applied. To evaluate column removal duration, nonlinear dynamic analysis is used to assess the vertical stiffness and performance level of beams. After analyzing the frames, it was shown that the end rigid zone can have a great impact on increasing vertical stiffness; while having much lower influence on beam rotation and structural capacity. Column removal duration can also have an impressive effect on maximum value of vertical displacement. This effect is highly demonstrated in gradually removal; however there is a slight difference in suddenly and standard removal.Hamid Reza AshrafiSeyed Ali HassanzadehIranian Society of Structrual Engineering (ISSE)articleprogressive collapsereinforced concrete frameend rigid zonescolumn removal durationnonlinear dynamic analysisvertical stiffnessBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss 3, Pp 66-84 (2018)
institution DOAJ
collection DOAJ
language FA
topic progressive collapse
reinforced concrete frame
end rigid zones
column removal duration
nonlinear dynamic analysis
vertical stiffness
Bridge engineering
TG1-470
Building construction
TH1-9745
spellingShingle progressive collapse
reinforced concrete frame
end rigid zones
column removal duration
nonlinear dynamic analysis
vertical stiffness
Bridge engineering
TG1-470
Building construction
TH1-9745
Hamid Reza Ashrafi
Seyed Ali Hassanzadeh
Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
description In this study, some researches about end rigid zones parameters and column removal duration in progressive collapse reinforced concrete frames are taken place. Due to massive dimensions of beams and columns in reinforced concrete frames, the effect of end rigid zones cannot be ignored. Column removal duration is one of the variables that can have different values considering the cause of an accident in which this study it is assessed in conditions such as suddenly, standard and gradually removal. Therefore, two 4- and 8-storey reinforced concrete frames are designed via OpenSees Software. The impact of end rigid zones and column removal duration in either frames has been evaluated by removal of the middle and corner column. In order to evaluate end rigid zones for determining vertical stiffness of structure and beams rotation considering performance level, nonlinear dynamic analysis is used. In addition, to assess structural capacity, nonlinear static analysis of increasing load is applied. To evaluate column removal duration, nonlinear dynamic analysis is used to assess the vertical stiffness and performance level of beams. After analyzing the frames, it was shown that the end rigid zone can have a great impact on increasing vertical stiffness; while having much lower influence on beam rotation and structural capacity. Column removal duration can also have an impressive effect on maximum value of vertical displacement. This effect is highly demonstrated in gradually removal; however there is a slight difference in suddenly and standard removal.
format article
author Hamid Reza Ashrafi
Seyed Ali Hassanzadeh
author_facet Hamid Reza Ashrafi
Seyed Ali Hassanzadeh
author_sort Hamid Reza Ashrafi
title Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
title_short Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
title_full Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
title_fullStr Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
title_full_unstemmed Investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
title_sort investigation of progressive collapse in reinforced concrete frames, considering end rigid zones and various scenarios for column removal duration
publisher Iranian Society of Structrual Engineering (ISSE)
publishDate 2018
url https://doaj.org/article/61249f9266a24622900a05ac4ace5f48
work_keys_str_mv AT hamidrezaashrafi investigationofprogressivecollapseinreinforcedconcreteframesconsideringendrigidzonesandvariousscenariosforcolumnremovalduration
AT seyedalihassanzadeh investigationofprogressivecollapseinreinforcedconcreteframesconsideringendrigidzonesandvariousscenariosforcolumnremovalduration
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