Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects

Ductility, over-strength, material properties and design methodology are the factors affect the reduction rate of the lateral strength of structure in nonlinear region. These factors are introduced as Seismic Performance Parameters, SPP, in technical literature. In seismic codes, the behavior factor...

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Autores principales:	Navid Siahpolo, Mohsen Gerami, Reza Vahdani
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2016
Materias:	pushover behavior factor nonlinear demand near filed earthquake ductility seismic performance parameters Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/687643fdd90b47cf85069d3ffd8328d2
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spelling	oai:doaj.org-article:687643fdd90b47cf85069d3ffd8328d22021-11-08T15:45:42ZEvaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects2476-39772538-2616https://doaj.org/article/687643fdd90b47cf85069d3ffd8328d22016-03-01T00:00:00Zhttps://www.jsce.ir/article_38637_9222636aa1210dcc7074e793506d4921.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Ductility, over-strength, material properties and design methodology are the factors affect the reduction rate of the lateral strength of structure in nonlinear region. These factors are introduced as Seismic Performance Parameters, SPP, in technical literature. In seismic codes, the behavior factor, which defines corresponding to the lateral resisting system, covers the aforementioned parameters. Although the R-factor is proposed experimentally, but it could be calculated by means of analytical models in two categories which are demand and capacity R-factor. However, reviewing previous studies reveal that less attention has been paid to the effects of near-fault pulse type earthquakes on R-factor. Therefore, in this study, the SPP is calculated by conventional and advanced pushover methods and the results are compared with the R-factor proposed by Standard 2800-Ver.3. In addition, the effect of load patterns on SPP and capacity curved are considered. The result of this study shows that the proposed R-factor by Standard 2800-3rd for steel special moment frames is conservative for low-rise structures. Increasing the height decreases, the capacity R-factor thus using the R-factor of standard-2800 is inaccurate. The conventional load patterns have no considerable effect on capacity R-factor. In addition, the average of global ductility is about 2 for all models and it is almost independent of the analysis method. At the end, the demand R-factor resulted by near-fault pulse type ground motions is between 0.2 and 0.4 of the value proposed by standard-2800. Therefore, using R-factor introduced by standard-2800 is conservative for the elastic design procedure.Navid SiahpoloMohsen GeramiReza VahdaniIranian Society of Structrual Engineering (ISSE)articlepushoverbehavior factornonlinear demandnear filed earthquakeductilityseismic performance parametersBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 2, Iss 4, Pp 131-145 (2016)
institution	DOAJ
collection	DOAJ
language	FA
topic	pushover behavior factor nonlinear demand near filed earthquake ductility seismic performance parameters Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	pushover behavior factor nonlinear demand near filed earthquake ductility seismic performance parameters Bridge engineering TG1-470 Building construction TH1-9745 Navid Siahpolo Mohsen Gerami Reza Vahdani Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
description	Ductility, over-strength, material properties and design methodology are the factors affect the reduction rate of the lateral strength of structure in nonlinear region. These factors are introduced as Seismic Performance Parameters, SPP, in technical literature. In seismic codes, the behavior factor, which defines corresponding to the lateral resisting system, covers the aforementioned parameters. Although the R-factor is proposed experimentally, but it could be calculated by means of analytical models in two categories which are demand and capacity R-factor. However, reviewing previous studies reveal that less attention has been paid to the effects of near-fault pulse type earthquakes on R-factor. Therefore, in this study, the SPP is calculated by conventional and advanced pushover methods and the results are compared with the R-factor proposed by Standard 2800-Ver.3. In addition, the effect of load patterns on SPP and capacity curved are considered. The result of this study shows that the proposed R-factor by Standard 2800-3rd for steel special moment frames is conservative for low-rise structures. Increasing the height decreases, the capacity R-factor thus using the R-factor of standard-2800 is inaccurate. The conventional load patterns have no considerable effect on capacity R-factor. In addition, the average of global ductility is about 2 for all models and it is almost independent of the analysis method. At the end, the demand R-factor resulted by near-fault pulse type ground motions is between 0.2 and 0.4 of the value proposed by standard-2800. Therefore, using R-factor introduced by standard-2800 is conservative for the elastic design procedure.
format	article
author	Navid Siahpolo Mohsen Gerami Reza Vahdani
author_facet	Navid Siahpolo Mohsen Gerami Reza Vahdani
author_sort	Navid Siahpolo
title	Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
title_short	Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
title_full	Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
title_fullStr	Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
title_full_unstemmed	Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects
title_sort	evaluation of seismic performance parameters of steel moment frames using conventional and advanced pushover methods with considering higher mode and near field pulse-type effects
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2016
url	https://doaj.org/article/687643fdd90b47cf85069d3ffd8328d2
work_keys_str_mv	AT navidsiahpolo evaluationofseismicperformanceparametersofsteelmomentframesusingconventionalandadvancedpushovermethodswithconsideringhighermodeandnearfieldpulsetypeeffects AT mohsengerami evaluationofseismicperformanceparametersofsteelmomentframesusingconventionalandadvancedpushovermethodswithconsideringhighermodeandnearfieldpulsetypeeffects AT rezavahdani evaluationofseismicperformanceparametersofsteelmomentframesusingconventionalandadvancedpushovermethodswithconsideringhighermodeandnearfieldpulsetypeeffects
_version_	1718441756800843776

Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects

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