Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems

In seismic analysis and design of structures, it is generally assumed that the soil beneath the foundation is rigid and, thus, its flexibility is not taken into account. Soil flexibility can affect the response of structures through complex phenomenon of dynamics soil-structure interaction effect. I...

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Autores principales:	Behnoud Ganjavi, S. Reza Mousavi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2019
Materias:	soil-structure interaction displacement amplification factor base shear cone model excitation frequency Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/0291ca82bb3c41f4a4317f261a0bf15b
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spelling	oai:doaj.org-article:0291ca82bb3c41f4a4317f261a0bf15b2021-11-08T15:50:45ZInfluence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems2476-39772538-261610.22065/jsce.2017.92297.1260https://doaj.org/article/0291ca82bb3c41f4a4317f261a0bf15b2019-02-01T00:00:00Zhttps://www.jsce.ir/article_87074_209afd50cc4e58dc97bdae4780a257e5.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616In seismic analysis and design of structures, it is generally assumed that the soil beneath the foundation is rigid and, thus, its flexibility is not taken into account. Soil flexibility can affect the response of structures through complex phenomenon of dynamics soil-structure interaction effect. It is believed that effective soil and structural parameters could in some case significantly influence seismic response of structures in different manners and conditions. In this study, through an intensive parametric study, the effect of key parameters of soil-structures for both constant-strength and constant-ductility conditions are examined. In this regard, the effect of foundation mass, structure and foundation mass moment of inertia, structure-to-soil stiffness ratio, structural aspect ratio, the ratio of structural mass to soil mass, and, more importantly, the effect of frequency-dependent soil dynamic stiffness on the elastic and inelastic response of superstructures are investigated. The results of this study indicate that excitation frequency dependence, foundation mass and mass moment of inertia have insignificant effects on the base shear coefficient, displacement amplification factor of soil-shallow foundation systems. Nevertheless, other parameters such as soil foundation-to-structure mass ratio and dimensionless frequency and aspect ratio could have considerable effects on the response of the soil-shallow foundation SDOF systems.Behnoud GanjaviS. Reza MousaviIranian Society of Structrual Engineering (ISSE)articlesoil-structure interactiondisplacement amplification factorbase shearcone modelexcitation frequencyBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 5, Iss 4, Pp 57-75 (2019)
institution	DOAJ
collection	DOAJ
language	FA
topic	soil-structure interaction displacement amplification factor base shear cone model excitation frequency Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	soil-structure interaction displacement amplification factor base shear cone model excitation frequency Bridge engineering TG1-470 Building construction TH1-9745 Behnoud Ganjavi S. Reza Mousavi Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
description	In seismic analysis and design of structures, it is generally assumed that the soil beneath the foundation is rigid and, thus, its flexibility is not taken into account. Soil flexibility can affect the response of structures through complex phenomenon of dynamics soil-structure interaction effect. It is believed that effective soil and structural parameters could in some case significantly influence seismic response of structures in different manners and conditions. In this study, through an intensive parametric study, the effect of key parameters of soil-structures for both constant-strength and constant-ductility conditions are examined. In this regard, the effect of foundation mass, structure and foundation mass moment of inertia, structure-to-soil stiffness ratio, structural aspect ratio, the ratio of structural mass to soil mass, and, more importantly, the effect of frequency-dependent soil dynamic stiffness on the elastic and inelastic response of superstructures are investigated. The results of this study indicate that excitation frequency dependence, foundation mass and mass moment of inertia have insignificant effects on the base shear coefficient, displacement amplification factor of soil-shallow foundation systems. Nevertheless, other parameters such as soil foundation-to-structure mass ratio and dimensionless frequency and aspect ratio could have considerable effects on the response of the soil-shallow foundation SDOF systems.
format	article
author	Behnoud Ganjavi S. Reza Mousavi
author_facet	Behnoud Ganjavi S. Reza Mousavi
author_sort	Behnoud Ganjavi
title	Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
title_short	Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
title_full	Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
title_fullStr	Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
title_full_unstemmed	Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
title_sort	influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2019
url	https://doaj.org/article/0291ca82bb3c41f4a4317f261a0bf15b
work_keys_str_mv	AT behnoudganjavi influenceoffrequencydependentdynamicsoilstiffnessandinteractingparametersonelasticandinelasticresponseofsoilstructuresystems AT srezamousavi influenceoffrequencydependentdynamicsoilstiffnessandinteractingparametersonelasticandinelasticresponseofsoilstructuresystems
_version_	1718441629267787776

Influence of frequency-dependent dynamic soil stiffness and interacting parameters on elastic and inelastic response of soil-structure systems

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