Yield displacement of slender cantilever RC walls as a function of the seismic demand features

The yield displacement is a relevant parameter to design slender cantilever RC walls under seismic actions. If the wall is expected to undergo inelastic excursions, then the yield displacement is used to estimate ductility demands, which are in turn used to design boundary elements (confinement rein...

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Autores principales:	Rubina,Victoria, Morales,Alejandro
Lenguaje:	English
Publicado:	Universidad Católica de la Santísima Concepción 2021
Materias:	yield displacement reinforced concrete cantilever slender walls seismic analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132021000100031
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spelling	oai:scielo:S0718-281320210001000312021-07-20Yield displacement of slender cantilever RC walls as a function of the seismic demand featuresRubina,VictoriaMorales,Alejandro yield displacement reinforced concrete cantilever slender walls seismic analysis The yield displacement is a relevant parameter to design slender cantilever RC walls under seismic actions. If the wall is expected to undergo inelastic excursions, then the yield displacement is used to estimate ductility demands, which are in turn used to design boundary elements (confinement reinforcing). In the last years, expressions to estimate the yield displacement have been proposed in several studies; many of them resorting to models with concentrated inelasticity. Results obtained with these models could be unrepresentative of the phenomenon studied, due to the assumption that the wall has elastic behaviour and constant stiffness above the critical section; evidence shows that the flexural stiffness of a wall varies during the dynamic response. Independently of the model used, most of the studies consider pushover analysis with different lateral load patterns (e.g. triangular or uniform), assuming the nature of the seismic demand. In this work, a parametric study of the yield displacement for cantilever slender RC walls is presented. The results were obtained from nonlinear response history analyses (NRHA) for a set of cantilever RC walls, representative of real wall buildings. To carry out NRHA, natural and artificial records with different features are used. Additionally, walls with different aspect ratio, height, thickness and longitudinal reinforcement are considered; walls were modelled with unidirectional fibres. The final discussion is focused on the influence of the higher mode effects in the yield displacement and its variability, in order to provide useful and simple design recommendations.info:eu-repo/semantics/openAccessUniversidad Católica de la Santísima ConcepciónObras y proyectos n.29 20212021-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132021000100031en10.4067/S0718-28132021000100031
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	yield displacement reinforced concrete cantilever slender walls seismic analysis
spellingShingle	yield displacement reinforced concrete cantilever slender walls seismic analysis Rubina,Victoria Morales,Alejandro Yield displacement of slender cantilever RC walls as a function of the seismic demand features
description	The yield displacement is a relevant parameter to design slender cantilever RC walls under seismic actions. If the wall is expected to undergo inelastic excursions, then the yield displacement is used to estimate ductility demands, which are in turn used to design boundary elements (confinement reinforcing). In the last years, expressions to estimate the yield displacement have been proposed in several studies; many of them resorting to models with concentrated inelasticity. Results obtained with these models could be unrepresentative of the phenomenon studied, due to the assumption that the wall has elastic behaviour and constant stiffness above the critical section; evidence shows that the flexural stiffness of a wall varies during the dynamic response. Independently of the model used, most of the studies consider pushover analysis with different lateral load patterns (e.g. triangular or uniform), assuming the nature of the seismic demand. In this work, a parametric study of the yield displacement for cantilever slender RC walls is presented. The results were obtained from nonlinear response history analyses (NRHA) for a set of cantilever RC walls, representative of real wall buildings. To carry out NRHA, natural and artificial records with different features are used. Additionally, walls with different aspect ratio, height, thickness and longitudinal reinforcement are considered; walls were modelled with unidirectional fibres. The final discussion is focused on the influence of the higher mode effects in the yield displacement and its variability, in order to provide useful and simple design recommendations.
author	Rubina,Victoria Morales,Alejandro
author_facet	Rubina,Victoria Morales,Alejandro
author_sort	Rubina,Victoria
title	Yield displacement of slender cantilever RC walls as a function of the seismic demand features
title_short	Yield displacement of slender cantilever RC walls as a function of the seismic demand features
title_full	Yield displacement of slender cantilever RC walls as a function of the seismic demand features
title_fullStr	Yield displacement of slender cantilever RC walls as a function of the seismic demand features
title_full_unstemmed	Yield displacement of slender cantilever RC walls as a function of the seismic demand features
title_sort	yield displacement of slender cantilever rc walls as a function of the seismic demand features
publisher	Universidad Católica de la Santísima Concepción
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-28132021000100031
work_keys_str_mv	AT rubinavictoria yielddisplacementofslendercantileverrcwallsasafunctionoftheseismicdemandfeatures AT moralesalejandro yielddisplacementofslendercantileverrcwallsasafunctionoftheseismicdemandfeatures
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Yield displacement of slender cantilever RC walls as a function of the seismic demand features

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