Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations

Liquid storage tanks are widely used to store different types of liquids such as petroleum products. Any failure of these structures may cause serious consequences. Near-fault ground motions which may have severe velocity pulses have a destructive potential on these facilities and can be represented...

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Autores principales:	Saman Bagheri, Hossein Hayati Raad
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	liquid storage tanks near-fault earthquake pulse-like excitation structure-fluid interaction seismic response Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/e243e47a14fe43769fbaa3589c9591d0
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spelling	oai:doaj.org-article:e243e47a14fe43769fbaa3589c9591d02021-11-08T15:52:14ZParametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations2476-39772538-261610.22065/jsce.2018.95816.1297https://doaj.org/article/e243e47a14fe43769fbaa3589c9591d02019-08-01T00:00:00Zhttps://www.jsce.ir/article_56974_7802a93488281a1c08d6e5a08e034c4b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Liquid storage tanks are widely used to store different types of liquids such as petroleum products. Any failure of these structures may cause serious consequences. Near-fault ground motions which may have severe velocity pulses have a destructive potential on these facilities and can be represented by analytical pulse-like functions. In this paper, a parametric study is carried out to investigate the seismic behavior of liquid storage tanks under pulse-like excitations. For this purpose, the liquid storage tanks are modeled using equivalent mechanical models and then dynamic analyses of the models are done using pulse-like excitations. The selected analytical pulse-like excitation is based on the modified Gabor Wavelet transform with four main characteristics: amplitude of the signal, period of the signal, shape (phase) of the signal, and the number of pulses. The effect of each pulse parameter as well as the effect of tank aspect ratio on the various response parameters is investigated. The obtained results indicate that the sloshing motion of the liquid near the free surface is affected more by equivalent pulses with long periods while the base shear and overturning moment are affected more by equivalent pulses with short periods. It is also seen that by increasing the number of pulses, the response parameters increase considerably when the pulse period is near the natural period of the convective mode. However, changing the phase of input signals in order to produce symmetric or anti-symmetric pulses has not any noticeable effect on the obtained results.Saman BagheriHossein Hayati RaadIranian Society of Structrual Engineering (ISSE)articleliquid storage tanksnear-fault earthquakepulse-like excitationstructure-fluid interactionseismic responseBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 6, Iss شماره 2, Pp 75-86 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	liquid storage tanks near-fault earthquake pulse-like excitation structure-fluid interaction seismic response Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	liquid storage tanks near-fault earthquake pulse-like excitation structure-fluid interaction seismic response Bridge engineering TG1-470 Building construction TH1-9745 Saman Bagheri Hossein Hayati Raad Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
description	Liquid storage tanks are widely used to store different types of liquids such as petroleum products. Any failure of these structures may cause serious consequences. Near-fault ground motions which may have severe velocity pulses have a destructive potential on these facilities and can be represented by analytical pulse-like functions. In this paper, a parametric study is carried out to investigate the seismic behavior of liquid storage tanks under pulse-like excitations. For this purpose, the liquid storage tanks are modeled using equivalent mechanical models and then dynamic analyses of the models are done using pulse-like excitations. The selected analytical pulse-like excitation is based on the modified Gabor Wavelet transform with four main characteristics: amplitude of the signal, period of the signal, shape (phase) of the signal, and the number of pulses. The effect of each pulse parameter as well as the effect of tank aspect ratio on the various response parameters is investigated. The obtained results indicate that the sloshing motion of the liquid near the free surface is affected more by equivalent pulses with long periods while the base shear and overturning moment are affected more by equivalent pulses with short periods. It is also seen that by increasing the number of pulses, the response parameters increase considerably when the pulse period is near the natural period of the convective mode. However, changing the phase of input signals in order to produce symmetric or anti-symmetric pulses has not any noticeable effect on the obtained results.
format	article
author	Saman Bagheri Hossein Hayati Raad
author_facet	Saman Bagheri Hossein Hayati Raad
author_sort	Saman Bagheri
title	Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
title_short	Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
title_full	Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
title_fullStr	Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
title_full_unstemmed	Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
title_sort	parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/e243e47a14fe43769fbaa3589c9591d0
work_keys_str_mv	AT samanbagheri parametricstudyondynamicbehaviorofliquidstoragetankssubjectedtopulselikeexcitations AT hosseinhayatiraad parametricstudyondynamicbehaviorofliquidstoragetankssubjectedtopulselikeexcitations
_version_	1718441708338806784

Parametric study on dynamic behavior of liquid storage tanks subjected to pulse-like excitations

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