Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses

The self-centering rocking steel braced frames are new type of seismic lateral-force resisting systems that are developed with aim to limiting structural damages, minimizing residual drifts on systems and creating easy and inexpensive reconstruction capability, after sever earthquakes. In Steel brac...

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Autores principales:	Hassan Amirzehni, Abazar Asghari, Erfan Shafei
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2016
Materias:	controlled rocking system self-centering systems post-tensioned cable energy dissipating fuses nonlinear time-history Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/348fedbc3167452caf29b1d4cc4ca90f
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id	oai:doaj.org-article:348fedbc3167452caf29b1d4cc4ca90f
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spelling	oai:doaj.org-article:348fedbc3167452caf29b1d4cc4ca90f2021-11-08T15:46:09ZEvaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses2476-39772538-261610.22065/jsce.2016.40458https://doaj.org/article/348fedbc3167452caf29b1d4cc4ca90f2016-12-01T00:00:00Zhttps://www.jsce.ir/article_40458_37357ef60bf14125ba49aa6f7ef819c6.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The self-centering rocking steel braced frames are new type of seismic lateral-force resisting systems that are developed with aim to limiting structural damages, minimizing residual drifts on systems and creating easy and inexpensive reconstruction capability, after sever earthquakes. In Steel braced frames with controlled rocking system, column bases on seismic resisting frame are not attached to the foundation and the frame allowed to rock freely. The task of restoring the rotated frame to its initial location is on post-tensioned cables, which attaches top of the frame to foundation. The design of post tensioned stands and braced frame members is such that during earthquakes they remain in elastic region. Seismic energy, dissipates by plastic deformations in replaceable elements on each rock of frame. In current research work, the seismic behavior of this type of lateral resisting systems is evaluated. The research conducted on a one bay steel braced frame with controlled rocking system that is analyzed using nonlinear dynamic time history analysis (NLTHA) procedure. The frame is subjected to JMA-Kobe and Northridge ground motions records that are scaled to unit, 1.2 and 1.5 times of maximum considered earthquake (MCE) ground motion level intensity. Extracted results show that seismic behavior of this type of lateral force resisting systems are so desirable even under MCE ground motion levels. The only anxiety is about occurring fatigue in post-tensioned strands that endangers overall stability of system.Hassan AmirzehniAbazar AsghariErfan ShafeiIranian Society of Structrual Engineering (ISSE)articlecontrolled rocking systemself-centering systemspost-tensioned cableenergy dissipating fusesnonlinear time-historyBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 3, Iss 3, Pp 73-85 (2016)
institution	DOAJ
collection	DOAJ
language	FA
topic	controlled rocking system self-centering systems post-tensioned cable energy dissipating fuses nonlinear time-history Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	controlled rocking system self-centering systems post-tensioned cable energy dissipating fuses nonlinear time-history Bridge engineering TG1-470 Building construction TH1-9745 Hassan Amirzehni Abazar Asghari Erfan Shafei Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
description	The self-centering rocking steel braced frames are new type of seismic lateral-force resisting systems that are developed with aim to limiting structural damages, minimizing residual drifts on systems and creating easy and inexpensive reconstruction capability, after sever earthquakes. In Steel braced frames with controlled rocking system, column bases on seismic resisting frame are not attached to the foundation and the frame allowed to rock freely. The task of restoring the rotated frame to its initial location is on post-tensioned cables, which attaches top of the frame to foundation. The design of post tensioned stands and braced frame members is such that during earthquakes they remain in elastic region. Seismic energy, dissipates by plastic deformations in replaceable elements on each rock of frame. In current research work, the seismic behavior of this type of lateral resisting systems is evaluated. The research conducted on a one bay steel braced frame with controlled rocking system that is analyzed using nonlinear dynamic time history analysis (NLTHA) procedure. The frame is subjected to JMA-Kobe and Northridge ground motions records that are scaled to unit, 1.2 and 1.5 times of maximum considered earthquake (MCE) ground motion level intensity. Extracted results show that seismic behavior of this type of lateral force resisting systems are so desirable even under MCE ground motion levels. The only anxiety is about occurring fatigue in post-tensioned strands that endangers overall stability of system.
format	article
author	Hassan Amirzehni Abazar Asghari Erfan Shafei
author_facet	Hassan Amirzehni Abazar Asghari Erfan Shafei
author_sort	Hassan Amirzehni
title	Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
title_short	Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
title_full	Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
title_fullStr	Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
title_full_unstemmed	Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses
title_sort	evaluation of seismic behavior of steel braced frames with controlled rocking system and energy dissipating fuses
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2016
url	https://doaj.org/article/348fedbc3167452caf29b1d4cc4ca90f
work_keys_str_mv	AT hassanamirzehni evaluationofseismicbehaviorofsteelbracedframeswithcontrolledrockingsystemandenergydissipatingfuses AT abazarasghari evaluationofseismicbehaviorofsteelbracedframeswithcontrolledrockingsystemandenergydissipatingfuses AT erfanshafei evaluationofseismicbehaviorofsteelbracedframeswithcontrolledrockingsystemandenergydissipatingfuses
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Evaluation of Seismic Behavior of Steel Braced Frames with Controlled Rocking System and Energy Dissipating Fuses

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