Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation

Non-uniform mass distribution in elevation is one of the main sources of irregularity in buildings that could lead to concentration of nonlinear deformations followed by local or global damage to buildings during earthquake excitation. Considering lack of accurate information about behavior of tunne...

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Autores principales:	سید بهرام بهشتی اول, Abdolreza S.Moghadam, Vahid Mohsenian
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	tunnel form system performance level mass irregularity irregularity in elevation fragility curves Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/0332cfdbf0ca415db93958f051d2918a
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spelling	oai:doaj.org-article:0332cfdbf0ca415db93958f051d2918a2021-11-08T15:51:06ZSeismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation2476-39772538-261610.22065/jsce.2017.78052.1086https://doaj.org/article/0332cfdbf0ca415db93958f051d2918a2019-02-01T00:00:00Zhttps://www.jsce.ir/article_48946_4ee0b6882813c4aba9287df1bf54a891.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Non-uniform mass distribution in elevation is one of the main sources of irregularity in buildings that could lead to concentration of nonlinear deformations followed by local or global damage to buildings during earthquake excitation. Considering lack of accurate information about behavior of tunnel form RC buildings in preceding earthquakes, it is required to evaluate vulnerability of such buildings with mass irregularity in elevation. In this research, seismic behavior of tunnel form RC buildings with heights of 5 and 10 stories, having different patterns of non-uniform mass distributions in elevation is studied in the nonlinear deformation range. For this purpose, seismic performance levels of understudied buildings under design earthquake are determined using time history analysis as well as pushover analysis. Fragility curves are developed by analytical approach for different hazard levels. The results show excellent performance of this structural system and placement in immediate occupancy performance level under maximum design earthquake Iranian seismic code (standard No. 2800). Moreover, modal vibration response of the system is not influenced by building height and height-wise mass distribution pattern. It seems that the provision No. 5 of regulations issued by Road, Housing & Urban Development Research Center of Iran pertaining to design and construction of tunnel form RC buildings, which stipulates that this type of buildings have to be regular in elevation, is so strict and conservative for the studied models with selected patterns of mass irregularities.سید بهرام بهشتی اولAbdolreza S.MoghadamVahid MohsenianIranian Society of Structrual Engineering (ISSE)articletunnel form systemperformance levelmass irregularityirregularity in elevationfragility curvesBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss شماره ویژه 4, Pp 5-21 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	tunnel form system performance level mass irregularity irregularity in elevation fragility curves Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	tunnel form system performance level mass irregularity irregularity in elevation fragility curves Bridge engineering TG1-470 Building construction TH1-9745 سید بهرام بهشتی اول Abdolreza S.Moghadam Vahid Mohsenian Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
description	Non-uniform mass distribution in elevation is one of the main sources of irregularity in buildings that could lead to concentration of nonlinear deformations followed by local or global damage to buildings during earthquake excitation. Considering lack of accurate information about behavior of tunnel form RC buildings in preceding earthquakes, it is required to evaluate vulnerability of such buildings with mass irregularity in elevation. In this research, seismic behavior of tunnel form RC buildings with heights of 5 and 10 stories, having different patterns of non-uniform mass distributions in elevation is studied in the nonlinear deformation range. For this purpose, seismic performance levels of understudied buildings under design earthquake are determined using time history analysis as well as pushover analysis. Fragility curves are developed by analytical approach for different hazard levels. The results show excellent performance of this structural system and placement in immediate occupancy performance level under maximum design earthquake Iranian seismic code (standard No. 2800). Moreover, modal vibration response of the system is not influenced by building height and height-wise mass distribution pattern. It seems that the provision No. 5 of regulations issued by Road, Housing & Urban Development Research Center of Iran pertaining to design and construction of tunnel form RC buildings, which stipulates that this type of buildings have to be regular in elevation, is so strict and conservative for the studied models with selected patterns of mass irregularities.
format	article
author	سید بهرام بهشتی اول Abdolreza S.Moghadam Vahid Mohsenian
author_facet	سید بهرام بهشتی اول Abdolreza S.Moghadam Vahid Mohsenian
author_sort	سید بهرام بهشتی اول
title	Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
title_short	Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
title_full	Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
title_fullStr	Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
title_full_unstemmed	Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation
title_sort	seismic behavior of tunnel form reinforced concrete buildings with mass irregularity in elevation
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/0332cfdbf0ca415db93958f051d2918a
work_keys_str_mv	AT sydbhrạmbhsẖtyạwl seismicbehavioroftunnelformreinforcedconcretebuildingswithmassirregularityinelevation AT abdolrezasmoghadam seismicbehavioroftunnelformreinforcedconcretebuildingswithmassirregularityinelevation AT vahidmohsenian seismicbehavioroftunnelformreinforcedconcretebuildingswithmassirregularityinelevation
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Seismic Behavior of Tunnel Form Reinforced Concrete Buildings with Mass Irregularity in Elevation

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