Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method

This study focuses on modeling spatial variation of earthquake ground motion using numerical methods. wave passage effect, incoherence effect and local site conditions effect are the effective parameters on this phenomenon which its investigated in simple 2D topography and 3D models near to real top...

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Autores principales:	mohsen isari, Reza Tarinejad, Abdullah Sohrabi-Bidar
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	non-uniform excitation site effect coherence function stochastic method boundary element Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/eb44a4330ec9432caf79662ea30c679a
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spelling	oai:doaj.org-article:eb44a4330ec9432caf79662ea30c679a2021-11-08T15:54:08ZExtended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method2476-39772538-261610.22065/jsce.2019.152507.1686https://doaj.org/article/eb44a4330ec9432caf79662ea30c679a2021-02-01T00:00:00Zhttps://www.jsce.ir/article_81830_684d68af8fe1ea8432c08a1d386c7ccb.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616This study focuses on modeling spatial variation of earthquake ground motion using numerical methods. wave passage effect, incoherence effect and local site conditions effect are the effective parameters on this phenomenon which its investigated in simple 2D topography and 3D models near to real topography. Among the numerical methods, the BEM is a very effective tool for dynamic analysis of linear elastic bounded and unbounded media. The method is very attractive for wave propagation problems, because the discretization is done only on the boundary, requiring smaller meshes and systems of equations. Seismic behavior of the site under the S wave at different frequencies are presented. For the different points on this topography, the pattern of displacement in time domain, pattern of amplification is presented. The effective parameters on topographic amplification are time lag and amplification. To determine the coherence function after too much analysis, statistical relationships for wave frequency content and site geometry are presented. Comparing results of this relationships with real recorded samples shows good accuracy and efficiency for calculating coherence support recorded data at canyon bed and the points above that. Using this statistical relationships and amplification functions due to existing records, the possibility of generating non-uniform accelerations using one record in canyon bed is investigated.mohsen isariReza TarinejadAbdullah Sohrabi-BidarIranian Society of Structrual Engineering (ISSE)articlenon-uniform excitationsite effectcoherence functionstochastic methodboundary elementBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss شماره ویژه 4, Pp 23-45 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	non-uniform excitation site effect coherence function stochastic method boundary element Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	non-uniform excitation site effect coherence function stochastic method boundary element Bridge engineering TG1-470 Building construction TH1-9745 mohsen isari Reza Tarinejad Abdullah Sohrabi-Bidar Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
description	This study focuses on modeling spatial variation of earthquake ground motion using numerical methods. wave passage effect, incoherence effect and local site conditions effect are the effective parameters on this phenomenon which its investigated in simple 2D topography and 3D models near to real topography. Among the numerical methods, the BEM is a very effective tool for dynamic analysis of linear elastic bounded and unbounded media. The method is very attractive for wave propagation problems, because the discretization is done only on the boundary, requiring smaller meshes and systems of equations. Seismic behavior of the site under the S wave at different frequencies are presented. For the different points on this topography, the pattern of displacement in time domain, pattern of amplification is presented. The effective parameters on topographic amplification are time lag and amplification. To determine the coherence function after too much analysis, statistical relationships for wave frequency content and site geometry are presented. Comparing results of this relationships with real recorded samples shows good accuracy and efficiency for calculating coherence support recorded data at canyon bed and the points above that. Using this statistical relationships and amplification functions due to existing records, the possibility of generating non-uniform accelerations using one record in canyon bed is investigated.
format	article
author	mohsen isari Reza Tarinejad Abdullah Sohrabi-Bidar
author_facet	mohsen isari Reza Tarinejad Abdullah Sohrabi-Bidar
author_sort	mohsen isari
title	Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
title_short	Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
title_full	Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
title_fullStr	Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
title_full_unstemmed	Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method
title_sort	extended coherence function on the topography for generated non-uniform record by using stochastic method
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/eb44a4330ec9432caf79662ea30c679a
work_keys_str_mv	AT mohsenisari extendedcoherencefunctiononthetopographyforgeneratednonuniformrecordbyusingstochasticmethod AT rezatarinejad extendedcoherencefunctiononthetopographyforgeneratednonuniformrecordbyusingstochasticmethod AT abdullahsohrabibidar extendedcoherencefunctiononthetopographyforgeneratednonuniformrecordbyusingstochasticmethod
_version_	1718441621463236608

Extended Coherence Function on The Topography for Generated Non-Uniform Record By Using Stochastic Method

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