The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion

In recent years some studies have been done on the moment rredistribution in buildings and new methods offered for calculating of redistribution. Observations demonstrated that the combination of moment and shear force is important in analysis of reinforced concrete structures. But little research i...

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Autores principales:	Mahdi Golpayegani, Alireza Mortezaei
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	plastic rotation buckling stability buckling analysis modal analysis nonlinear time history analysis stability index Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/06f8cdea54974c2d9e840233eea93482
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spelling	oai:doaj.org-article:06f8cdea54974c2d9e840233eea934822021-11-08T15:46:36ZThe effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion2476-39772538-261610.22065/jsce.2017.74562.1054https://doaj.org/article/06f8cdea54974c2d9e840233eea934822017-08-01T00:00:00Zhttps://www.jsce.ir/article_44838_4cf4b2386976c227b90c9adc1d15dcd0.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In recent years some studies have been done on the moment rredistribution in buildings and new methods offered for calculating of redistribution. Observations demonstrated that the combination of moment and shear force is important in analysis of reinforced concrete structures. But little research is done about the effect of redistribution by using moding in software. In order to study the effect of moment redistribution on the stability of RC moment resisting frame structures, four buildings with 4, 7, 10 and 13 story have been considered. In these models, the nonlinear behavior of elements (beam and column) is considered by the use of interaction PMM hinges. The average plastic rotation was calculated by performing pushover analysis and storing stiffness matrix for 5 points and then the buckling coefficients were obtained by conducting buckling analysis. By the use of modal analysis natural frequency was calculated and it was attempted to be related the average plastic rotation with the buckling coefficients and the natural frequency. It could be concluded that increase in the plastic rotation reduce the buckling coefficients to about 96% which this amount of reduction is related to the average plastic rotation. Moreover, the buildings experience instability state when the average plastic rotation reached to 0.006 radian.Mahdi GolpayeganiAlireza MortezaeiIranian Society of Structrual Engineering (ISSE)articleplastic rotationbuckling stabilitybuckling analysismodal analysisnonlinear time history analysisstability indexBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss 2, Pp 68-84 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	plastic rotation buckling stability buckling analysis modal analysis nonlinear time history analysis stability index Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	plastic rotation buckling stability buckling analysis modal analysis nonlinear time history analysis stability index Bridge engineering TG1-470 Building construction TH1-9745 Mahdi Golpayegani Alireza Mortezaei The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
description	In recent years some studies have been done on the moment rredistribution in buildings and new methods offered for calculating of redistribution. Observations demonstrated that the combination of moment and shear force is important in analysis of reinforced concrete structures. But little research is done about the effect of redistribution by using moding in software. In order to study the effect of moment redistribution on the stability of RC moment resisting frame structures, four buildings with 4, 7, 10 and 13 story have been considered. In these models, the nonlinear behavior of elements (beam and column) is considered by the use of interaction PMM hinges. The average plastic rotation was calculated by performing pushover analysis and storing stiffness matrix for 5 points and then the buckling coefficients were obtained by conducting buckling analysis. By the use of modal analysis natural frequency was calculated and it was attempted to be related the average plastic rotation with the buckling coefficients and the natural frequency. It could be concluded that increase in the plastic rotation reduce the buckling coefficients to about 96% which this amount of reduction is related to the average plastic rotation. Moreover, the buildings experience instability state when the average plastic rotation reached to 0.006 radian.
format	article
author	Mahdi Golpayegani Alireza Mortezaei
author_facet	Mahdi Golpayegani Alireza Mortezaei
author_sort	Mahdi Golpayegani
title	The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
title_short	The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
title_full	The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
title_fullStr	The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
title_full_unstemmed	The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
title_sort	effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/06f8cdea54974c2d9e840233eea93482
work_keys_str_mv	AT mahdigolpayegani theeffectofmomentredistributiononthestabilityofreinforcedconcretemomentresistingframebuildingsunderthegroundmotion AT alirezamortezaei theeffectofmomentredistributiononthestabilityofreinforcedconcretemomentresistingframebuildingsunderthegroundmotion AT mahdigolpayegani effectofmomentredistributiononthestabilityofreinforcedconcretemomentresistingframebuildingsunderthegroundmotion AT alirezamortezaei effectofmomentredistributiononthestabilityofreinforcedconcretemomentresistingframebuildingsunderthegroundmotion
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The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion

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