Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis

Tall industrial chimneys are sensitive structures to dynamic wind loads. Design codes generally provide approximate equations to estimate the wind-induced response of tall structures. However, they require dynamic analysis to determine the accurate response of slender and sensitive structures. In th...

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Autores principales:	Houshyar Eimani kalehsar, Nahmat Khidaie
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2017
Materias:	across-wind response along-wind response tall rc chimneys frequency domain analysis transfer matrix Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/9423640d60014b55acb95e96462f3190
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id	oai:doaj.org-article:9423640d60014b55acb95e96462f3190
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spelling	oai:doaj.org-article:9423640d60014b55acb95e96462f31902021-11-08T15:46:36ZParametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis2476-39772538-261610.22065/jsce.2017.72448.1051https://doaj.org/article/9423640d60014b55acb95e96462f31902017-08-01T00:00:00Zhttps://www.jsce.ir/article_44837_bcbadf9b2939c4339e339d67bfa25443.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Tall industrial chimneys are sensitive structures to dynamic wind loads. Design codes generally provide approximate equations to estimate the wind-induced response of tall structures. However, they require dynamic analysis to determine the accurate response of slender and sensitive structures. In the present study, dynamic responses of 100-400 m tall RC chimneys under the random wind loads are determined using the frequency domain analysis. Due to the dominant bending mode, the structure of the chimney is modeled as a multi-degree-of-freedom (MDOF) lumped-mass system. All the modeling and analysis procedure, including element meshing, determining the transfer matrix, calculating the along-wind and across-wind force spectrum matrices, and the numerical integration to obtain the responses, are carried out using MATLAB software. The effect of different design parameters, such as chimney height, top diameter to base diameter ratio, basic wind velocity, and terrain category on the wind-induced response of structures, is investigated. The results indicate that the coefficient of variation (CV) of the along-wind response increases with increasing the basic wind velocity. The maximum across-wind responses of the studied chimneys occur in the basic wind velocity range of 10 to 20 m/sec. The across-wind response significantly decreases as the ratio of top diameter to base diameter of the chimney decreases.Houshyar Eimani kalehsarNahmat KhidaieIranian Society of Structrual Engineering (ISSE)articleacross-wind responsealong-wind responsetall rc chimneysfrequency domain analysistransfer matrixBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 4, Iss 2, Pp 148-160 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	across-wind response along-wind response tall rc chimneys frequency domain analysis transfer matrix Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	across-wind response along-wind response tall rc chimneys frequency domain analysis transfer matrix Bridge engineering TG1-470 Building construction TH1-9745 Houshyar Eimani kalehsar Nahmat Khidaie Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
description	Tall industrial chimneys are sensitive structures to dynamic wind loads. Design codes generally provide approximate equations to estimate the wind-induced response of tall structures. However, they require dynamic analysis to determine the accurate response of slender and sensitive structures. In the present study, dynamic responses of 100-400 m tall RC chimneys under the random wind loads are determined using the frequency domain analysis. Due to the dominant bending mode, the structure of the chimney is modeled as a multi-degree-of-freedom (MDOF) lumped-mass system. All the modeling and analysis procedure, including element meshing, determining the transfer matrix, calculating the along-wind and across-wind force spectrum matrices, and the numerical integration to obtain the responses, are carried out using MATLAB software. The effect of different design parameters, such as chimney height, top diameter to base diameter ratio, basic wind velocity, and terrain category on the wind-induced response of structures, is investigated. The results indicate that the coefficient of variation (CV) of the along-wind response increases with increasing the basic wind velocity. The maximum across-wind responses of the studied chimneys occur in the basic wind velocity range of 10 to 20 m/sec. The across-wind response significantly decreases as the ratio of top diameter to base diameter of the chimney decreases.
format	article
author	Houshyar Eimani kalehsar Nahmat Khidaie
author_facet	Houshyar Eimani kalehsar Nahmat Khidaie
author_sort	Houshyar Eimani kalehsar
title	Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
title_short	Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
title_full	Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
title_fullStr	Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
title_full_unstemmed	Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis
title_sort	parametric study of the along-wind and across-wind responses of tall rc chimneys using the frequency domain analysis
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2017
url	https://doaj.org/article/9423640d60014b55acb95e96462f3190
work_keys_str_mv	AT houshyareimanikalehsar parametricstudyofthealongwindandacrosswindresponsesoftallrcchimneysusingthefrequencydomainanalysis AT nahmatkhidaie parametricstudyofthealongwindandacrosswindresponsesoftallrcchimneysusingthefrequencydomainanalysis
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Parametric study of the along-wind and across-wind responses of tall RC chimneys using the frequency domain analysis

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