Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves

One of the basic problems in seismic design of buildings is appropriate configuration of their plans to prevent an increase in torsional moments due to irregularity. Nowadays, usage of irregular plans because of having a specific plan and beautiful appearance is increasing. The existence of irregula...

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Autores principales:	Pedram Omidian, Hamid Saffari
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2018
Materias:	irregular rc structure ida maximum drift residual drift base shear response modification factor fragility curves Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/dc60039b864d40d28170eafd623fd72b
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spelling	oai:doaj.org-article:dc60039b864d40d28170eafd623fd72b2021-11-08T15:50:37ZSeismic vulnerability assessment of regular and irregular concrete structures using fragility curves2476-39772538-261610.22065/jsce.2017.84305.1168https://doaj.org/article/dc60039b864d40d28170eafd623fd72b2018-10-01T00:00:00Zhttps://www.jsce.ir/article_49611_f5cbefa3fda43f485b67dbe6ef0277d6.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616One of the basic problems in seismic design of buildings is appropriate configuration of their plans to prevent an increase in torsional moments due to irregularity. Nowadays, usage of irregular plans because of having a specific plan and beautiful appearance is increasing. The existence of irregularities in the structure during an earthquake causes torsion of structure, which leads to the intensification of seismic displacements and forces on structure. In this study, the seismic behavior of regular and irregular reinforced concrete structure with the number 3, 6 and 9 stories under ten records for incremental dynamic analysis have been evaluated. To this purpose, indexes such as maximum drift, residual drift, base shear and response modification factor have been compared. Fragility curves, using the threshold of damage state of RC structure according to HAZUS in both regular and irregular structures have been investigated. The results indicated that by increasing irregularity, maximum drift, residual drift base shear and probability of damage are increased. The response modification factor is also reduced as irregularity increases. Furthermore, by increasing the number of stories and rate of irregularity, the damage percentage of structure is increased. Therefore, design of irregular structures in plan is not recommended as much as possiblePedram OmidianHamid SaffariIranian Society of Structrual Engineering (ISSE)articleirregular rc structureidamaximum driftresidual driftbase shearresponse modification factorfragility curvesBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss 3, Pp 124-144 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	irregular rc structure ida maximum drift residual drift base shear response modification factor fragility curves Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	irregular rc structure ida maximum drift residual drift base shear response modification factor fragility curves Bridge engineering TG1-470 Building construction TH1-9745 Pedram Omidian Hamid Saffari Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
description	One of the basic problems in seismic design of buildings is appropriate configuration of their plans to prevent an increase in torsional moments due to irregularity. Nowadays, usage of irregular plans because of having a specific plan and beautiful appearance is increasing. The existence of irregularities in the structure during an earthquake causes torsion of structure, which leads to the intensification of seismic displacements and forces on structure. In this study, the seismic behavior of regular and irregular reinforced concrete structure with the number 3, 6 and 9 stories under ten records for incremental dynamic analysis have been evaluated. To this purpose, indexes such as maximum drift, residual drift, base shear and response modification factor have been compared. Fragility curves, using the threshold of damage state of RC structure according to HAZUS in both regular and irregular structures have been investigated. The results indicated that by increasing irregularity, maximum drift, residual drift base shear and probability of damage are increased. The response modification factor is also reduced as irregularity increases. Furthermore, by increasing the number of stories and rate of irregularity, the damage percentage of structure is increased. Therefore, design of irregular structures in plan is not recommended as much as possible
format	article
author	Pedram Omidian Hamid Saffari
author_facet	Pedram Omidian Hamid Saffari
author_sort	Pedram Omidian
title	Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
title_short	Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
title_full	Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
title_fullStr	Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
title_full_unstemmed	Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
title_sort	seismic vulnerability assessment of regular and irregular concrete structures using fragility curves
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2018
url	https://doaj.org/article/dc60039b864d40d28170eafd623fd72b
work_keys_str_mv	AT pedramomidian seismicvulnerabilityassessmentofregularandirregularconcretestructuresusingfragilitycurves AT hamidsaffari seismicvulnerabilityassessmentofregularandirregularconcretestructuresusingfragilitycurves
_version_	1718441706389504000

Seismic vulnerability assessment of regular and irregular concrete structures using fragility curves

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