Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods

The dual steel resistant skeleton is one of the functional structural systems for resisting against lateral forces induced by earthquakes that in addition to the enhanced ductility possesses high stiffness, dynamic stability, and redundancy. Behavioural pattern of dual resisting systems is based on...

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Autores principales:	Saeed Kiaeinejad, Afshin Meshkat-Dini, Ali Massumi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2020
Materias:	seismic behaviour dual resistant system eccentrically braced panel knee rods near-field zone velocity pulse Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/918030fc61ea488a8384c29d93e86041
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id	oai:doaj.org-article:918030fc61ea488a8384c29d93e86041
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spelling	oai:doaj.org-article:918030fc61ea488a8384c29d93e860412021-11-08T15:53:06ZStudy on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods2476-39772538-261610.22065/jsce.2018.117309.1447https://doaj.org/article/918030fc61ea488a8384c29d93e860412020-03-01T00:00:00Zhttps://www.jsce.ir/article_66847_37dad40801c3562f2804ad332e75f3ea.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The dual steel resistant skeleton is one of the functional structural systems for resisting against lateral forces induced by earthquakes that in addition to the enhanced ductility possesses high stiffness, dynamic stability, and redundancy. Behavioural pattern of dual resisting systems is based on shear and bending performance modes. This research includes a study on the nonlinear seismic behaviour of dual eccentrically braced resisting frames with knee rods. The extent of the effectiveness of knee bracing has been assessed based on nonlinear time history analyses of the structure subjected to severe three-component earthquake records. A strong near-field ground motion possesses particular characteristics. The existence of high amplitude and long period pulses in recorded strong ground motions along with the severe accumulation of kinetic energy and its short release time, are of noticeable differences between near-field and far-field earthquake records. The particular objective of this research is to evaluate the amplitude of variations in maximum responses and to determine the time history of absolute acceleration, relative displacement, and relative velocity of floors along with the base shear of the studied models. Analysing the results indicate an observable appearance of the effects of large coherent velocity pulses presented in the time history of near-field earthquake records, on the relative lateral displacement of floors and on the rapid propagation of plastic hinge mechanism throughout the primary elements of dual resistant skeleton.Saeed KiaeinejadAfshin Meshkat-DiniAli MassumiIranian Society of Structrual Engineering (ISSE)articleseismic behaviourdual resistant systemeccentrically braced panelknee rodsnear-field zonevelocity pulseBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss 1, Pp 124-140 (2020)
institution	DOAJ
collection	DOAJ
language	FA
topic	seismic behaviour dual resistant system eccentrically braced panel knee rods near-field zone velocity pulse Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	seismic behaviour dual resistant system eccentrically braced panel knee rods near-field zone velocity pulse Bridge engineering TG1-470 Building construction TH1-9745 Saeed Kiaeinejad Afshin Meshkat-Dini Ali Massumi Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
description	The dual steel resistant skeleton is one of the functional structural systems for resisting against lateral forces induced by earthquakes that in addition to the enhanced ductility possesses high stiffness, dynamic stability, and redundancy. Behavioural pattern of dual resisting systems is based on shear and bending performance modes. This research includes a study on the nonlinear seismic behaviour of dual eccentrically braced resisting frames with knee rods. The extent of the effectiveness of knee bracing has been assessed based on nonlinear time history analyses of the structure subjected to severe three-component earthquake records. A strong near-field ground motion possesses particular characteristics. The existence of high amplitude and long period pulses in recorded strong ground motions along with the severe accumulation of kinetic energy and its short release time, are of noticeable differences between near-field and far-field earthquake records. The particular objective of this research is to evaluate the amplitude of variations in maximum responses and to determine the time history of absolute acceleration, relative displacement, and relative velocity of floors along with the base shear of the studied models. Analysing the results indicate an observable appearance of the effects of large coherent velocity pulses presented in the time history of near-field earthquake records, on the relative lateral displacement of floors and on the rapid propagation of plastic hinge mechanism throughout the primary elements of dual resistant skeleton.
format	article
author	Saeed Kiaeinejad Afshin Meshkat-Dini Ali Massumi
author_facet	Saeed Kiaeinejad Afshin Meshkat-Dini Ali Massumi
author_sort	Saeed Kiaeinejad
title	Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
title_short	Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
title_full	Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
title_fullStr	Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
title_full_unstemmed	Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
title_sort	study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2020
url	https://doaj.org/article/918030fc61ea488a8384c29d93e86041
work_keys_str_mv	AT saeedkiaeinejad studyontheeffectsofrupturedirectivityonseismicbehaviourofhybridskeletalsystemsofeccentricallybracedframeswithkneerods AT afshinmeshkatdini studyontheeffectsofrupturedirectivityonseismicbehaviourofhybridskeletalsystemsofeccentricallybracedframeswithkneerods AT alimassumi studyontheeffectsofrupturedirectivityonseismicbehaviourofhybridskeletalsystemsofeccentricallybracedframeswithkneerods
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Study on the effects of rupture directivity on seismic behaviour of hybrid skeletal systems of eccentrically braced frames with knee rods

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