Evaluation the behavior of seismic bracing connections based on clearance

Today one of the most common systems for resisting lateral forces (wind and earthquake) is special concentrically braced frames (SCBF). Out of plane buckling in compression causes large inelastic flexural deformations in gusset plate. In order to supply the capacity of inelastic deformations in guss...

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Autores principales:	Mojtaba Akrami, Ehsan Dehghani
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2018
Materias:	concentrically braced frame out of plan buckling gusset plate clearance seismic behavior Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/85eb78f65d0a43fd9a5c9a09167e63ba
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spelling	oai:doaj.org-article:85eb78f65d0a43fd9a5c9a09167e63ba2021-11-08T15:50:59ZEvaluation the behavior of seismic bracing connections based on clearance2476-39772538-261610.22065/jsce.2017.83671.1157https://doaj.org/article/85eb78f65d0a43fd9a5c9a09167e63ba2018-11-01T00:00:00Zhttps://www.jsce.ir/article_51820_6824f130c4ca9fa3f899645a69cd3a13.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Today one of the most common systems for resisting lateral forces (wind and earthquake) is special concentrically braced frames (SCBF). Out of plane buckling in compression causes large inelastic flexural deformations in gusset plate. In order to supply the capacity of inelastic deformations in gusset plate, current design practice recommends a “2t” linear geometric offset to be used. Recent research has been done to improve the seismic behavior of connections for braced frames shown that the use of a clearance by elliptical pattern has better results than linear pattern clearance.In this paper using the finite element method, a one-story frame under cyclic loads and considering the nonlinear effects of material and geometric has been modeled and verified. The parameters that considered are effect of clearance (linear, elliptical and lack of clearance) at different angles and clearance in an elliptical pattern. The results of the samples, hysteresis curve, compressive and tensile resistance, as well as stress and strain showed that the clearance effect on tensile strength and compressive is between 2.86 to 13.5 percent for different angles of connected braces. Ductility in the case of lack of clearance between angles of 30 to 60 degrees reduced 30 to 60 percent relative to the elliptical clearance.Mojtaba AkramiEhsan DehghaniIranian Society of Structrual Engineering (ISSE)articleconcentrically braced frameout of plan bucklinggusset plateclearanceseismic behaviorBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss شماره ویژه 3, Pp 190-209 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	concentrically braced frame out of plan buckling gusset plate clearance seismic behavior Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	concentrically braced frame out of plan buckling gusset plate clearance seismic behavior Bridge engineering TG1-470 Building construction TH1-9745 Mojtaba Akrami Ehsan Dehghani Evaluation the behavior of seismic bracing connections based on clearance
description	Today one of the most common systems for resisting lateral forces (wind and earthquake) is special concentrically braced frames (SCBF). Out of plane buckling in compression causes large inelastic flexural deformations in gusset plate. In order to supply the capacity of inelastic deformations in gusset plate, current design practice recommends a “2t” linear geometric offset to be used. Recent research has been done to improve the seismic behavior of connections for braced frames shown that the use of a clearance by elliptical pattern has better results than linear pattern clearance.In this paper using the finite element method, a one-story frame under cyclic loads and considering the nonlinear effects of material and geometric has been modeled and verified. The parameters that considered are effect of clearance (linear, elliptical and lack of clearance) at different angles and clearance in an elliptical pattern. The results of the samples, hysteresis curve, compressive and tensile resistance, as well as stress and strain showed that the clearance effect on tensile strength and compressive is between 2.86 to 13.5 percent for different angles of connected braces. Ductility in the case of lack of clearance between angles of 30 to 60 degrees reduced 30 to 60 percent relative to the elliptical clearance.
format	article
author	Mojtaba Akrami Ehsan Dehghani
author_facet	Mojtaba Akrami Ehsan Dehghani
author_sort	Mojtaba Akrami
title	Evaluation the behavior of seismic bracing connections based on clearance
title_short	Evaluation the behavior of seismic bracing connections based on clearance
title_full	Evaluation the behavior of seismic bracing connections based on clearance
title_fullStr	Evaluation the behavior of seismic bracing connections based on clearance
title_full_unstemmed	Evaluation the behavior of seismic bracing connections based on clearance
title_sort	evaluation the behavior of seismic bracing connections based on clearance
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2018
url	https://doaj.org/article/85eb78f65d0a43fd9a5c9a09167e63ba
work_keys_str_mv	AT mojtabaakrami evaluationthebehaviorofseismicbracingconnectionsbasedonclearance AT ehsandehghani evaluationthebehaviorofseismicbracingconnectionsbasedonclearance
_version_	1718441679690661888

Evaluation the behavior of seismic bracing connections based on clearance

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