Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion

Behavior factor (R) is one of the seismic design parameters that considers nonlinear performance of structures during an earthquake. In most of the seismic design codes, behavior factor has been used for considering nonlinear performance of structures in linear analyses. The purpose of this study is...

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Autores principales:	M. Gerami, A. H. Mashayekhi, N. Siahpolo
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2016
Materias:	behavior factor (r factor) displacement modifier factor displacement-based adaptive pushover analysis fema p-695 overstrength factor Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/f9b716a87c8d458aafc7fbd96b20d260
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spelling	oai:doaj.org-article:f9b716a87c8d458aafc7fbd96b20d2602021-11-08T15:45:57ZEvaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion2476-39772538-2616https://doaj.org/article/f9b716a87c8d458aafc7fbd96b20d2602016-09-01T00:00:00Zhttps://www.jsce.ir/article_38574_c56aef8a0c7fdc09bbc6bb1621559b4e.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Behavior factor (R) is one of the seismic design parameters that considers nonlinear performance of structures during an earthquake. In most of the seismic design codes, behavior factor has been used for considering nonlinear performance of structures in linear analyses. The purpose of this study is an evaluation of seismic parameters of structures under far-field and near-field ground motions (rotated to fault strike‑normal and fault strike‑parallel) based on the method presented in FEMA P‑695 and comparing the results with those in the code. Thus, five intermediate steel moment resisting frames with 4, 7, 10, 15, and 20 stories were considered. The capacity curve of each model were obtained by Displacement- based Adaptive Pushover Analysis. All of the nonlinear analyses were conducted by OpenSees. The results state that the behavior factor due to the ground motions used in this study decreases as the structure’s height increases. Average of difference of behavior factor in far-field ground motions and average of behavior factor in near-field ground motions is 6.5 percent and the reason is that the behavior factor in far-field ground motions is greater. Also, the behavior factor in fault strike-parallel near-field ground motions (SP) is greater than fault strike-normal near-field (SN) and the average of this difference for different structures is almost 4 percent.M. GeramiA. H. MashayekhiN. SiahpoloIranian Society of Structrual Engineering (ISSE)articlebehavior factor (r factor)displacement modifier factordisplacement-based adaptive pushover analysisfema p-695overstrength factorBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 3, Iss 2, Pp 59-72 (2016)
institution	DOAJ
collection	DOAJ
language	FA
topic	behavior factor (r factor) displacement modifier factor displacement-based adaptive pushover analysis fema p-695 overstrength factor Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	behavior factor (r factor) displacement modifier factor displacement-based adaptive pushover analysis fema p-695 overstrength factor Bridge engineering TG1-470 Building construction TH1-9745 M. Gerami A. H. Mashayekhi N. Siahpolo Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
description	Behavior factor (R) is one of the seismic design parameters that considers nonlinear performance of structures during an earthquake. In most of the seismic design codes, behavior factor has been used for considering nonlinear performance of structures in linear analyses. The purpose of this study is an evaluation of seismic parameters of structures under far-field and near-field ground motions (rotated to fault strike‑normal and fault strike‑parallel) based on the method presented in FEMA P‑695 and comparing the results with those in the code. Thus, five intermediate steel moment resisting frames with 4, 7, 10, 15, and 20 stories were considered. The capacity curve of each model were obtained by Displacement- based Adaptive Pushover Analysis. All of the nonlinear analyses were conducted by OpenSees. The results state that the behavior factor due to the ground motions used in this study decreases as the structure’s height increases. Average of difference of behavior factor in far-field ground motions and average of behavior factor in near-field ground motions is 6.5 percent and the reason is that the behavior factor in far-field ground motions is greater. Also, the behavior factor in fault strike-parallel near-field ground motions (SP) is greater than fault strike-normal near-field (SN) and the average of this difference for different structures is almost 4 percent.
format	article
author	M. Gerami A. H. Mashayekhi N. Siahpolo
author_facet	M. Gerami A. H. Mashayekhi N. Siahpolo
author_sort	M. Gerami
title	Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
title_short	Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
title_full	Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
title_fullStr	Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
title_full_unstemmed	Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion
title_sort	evaluation of seismic parameters of steel moment resisting frames based on “fema p-695” under near-field rotated ground motion
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2016
url	https://doaj.org/article/f9b716a87c8d458aafc7fbd96b20d260
work_keys_str_mv	AT mgerami evaluationofseismicparametersofsteelmomentresistingframesbasedonfemap695undernearfieldrotatedgroundmotion AT ahmashayekhi evaluationofseismicparametersofsteelmomentresistingframesbasedonfemap695undernearfieldrotatedgroundmotion AT nsiahpolo evaluationofseismicparametersofsteelmomentresistingframesbasedonfemap695undernearfieldrotatedgroundmotion
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Evaluation of seismic parameters of steel moment resisting frames based on “FEMA P-695” under near-field rotated ground motion

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