Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/76640 |
Resumo: | Heritage masonry structures are often modelled as dry-jointed structures. On the one hand, it may correspond to the reality where the initial mortar was weak, missing, or has disappeared through time because of erosion and lixiviation. On the other hand, this modelling approach reduces complexity to the studied problem, both from an experimental and theoretical/numerical point of views, while being conservative. Still, for modelling purposes, in addition to the joint friction, numerical approaches require a specific elastic parameter, the dry-joint stiffness, which is often hard to estimate experimentally. This work numerically investigates the effect of the joint stiffness on the collapse of scaled-down tilting test experiments carried out on perforated dry-joint masonry shear walls. It is found that geometrical imperfections of bricks and the absence of vertical precompression load can lead to very low equivalent dry-joint stiffness, which strongly affects the results, both in terms of collapse and damage limit state (DLS) loads, with practical implications for the engineering practice. |
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Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigationsJoint stiffnessSeismic behaviourMasonry built heritageTilting testsDiscrete Element Method (DEM)Engenharia e Tecnologia::Engenharia CivilScience & TechnologyHeritage masonry structures are often modelled as dry-jointed structures. On the one hand, it may correspond to the reality where the initial mortar was weak, missing, or has disappeared through time because of erosion and lixiviation. On the other hand, this modelling approach reduces complexity to the studied problem, both from an experimental and theoretical/numerical point of views, while being conservative. Still, for modelling purposes, in addition to the joint friction, numerical approaches require a specific elastic parameter, the dry-joint stiffness, which is often hard to estimate experimentally. This work numerically investigates the effect of the joint stiffness on the collapse of scaled-down tilting test experiments carried out on perforated dry-joint masonry shear walls. It is found that geometrical imperfections of bricks and the absence of vertical precompression load can lead to very low equivalent dry-joint stiffness, which strongly affects the results, both in terms of collapse and damage limit state (DLS) loads, with practical implications for the engineering practice.This work was partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020. This study has also been funded by the STAND4HERITAGE project (New Standards for Seismic Assessment of Built Cultural Heritage) that has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant No. 833123) as an Advanced Grant.MDPIUniversidade do MinhoSavalle, NathanaëlLourenço, Paulo B.Milani, Gabriele2022-02-172022-02-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/76640engSavalle, N., Lourenço, P. B., & Milani, G. (2022). Joint Stiffness Influence on the First-Order Seismic Capacity of Dry-Joint Masonry Structures: Numerical DEM Investigations. Applied Sciences, 12(4), 2108.2076-341710.3390/app12042108https://www.mdpi.com/2076-3417/12/4/2108info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:08:54Zoai:repositorium.sdum.uminho.pt:1822/76640Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:00:14.394565Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
title |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
spellingShingle |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations Savalle, Nathanaël Joint stiffness Seismic behaviour Masonry built heritage Tilting tests Discrete Element Method (DEM) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
title_full |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
title_fullStr |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
title_full_unstemmed |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
title_sort |
Joint stiffness influence on the first-order seismic capacity of dry-joint masonry structures: numerical DEM investigations |
author |
Savalle, Nathanaël |
author_facet |
Savalle, Nathanaël Lourenço, Paulo B. Milani, Gabriele |
author_role |
author |
author2 |
Lourenço, Paulo B. Milani, Gabriele |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Savalle, Nathanaël Lourenço, Paulo B. Milani, Gabriele |
dc.subject.por.fl_str_mv |
Joint stiffness Seismic behaviour Masonry built heritage Tilting tests Discrete Element Method (DEM) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Joint stiffness Seismic behaviour Masonry built heritage Tilting tests Discrete Element Method (DEM) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
Heritage masonry structures are often modelled as dry-jointed structures. On the one hand, it may correspond to the reality where the initial mortar was weak, missing, or has disappeared through time because of erosion and lixiviation. On the other hand, this modelling approach reduces complexity to the studied problem, both from an experimental and theoretical/numerical point of views, while being conservative. Still, for modelling purposes, in addition to the joint friction, numerical approaches require a specific elastic parameter, the dry-joint stiffness, which is often hard to estimate experimentally. This work numerically investigates the effect of the joint stiffness on the collapse of scaled-down tilting test experiments carried out on perforated dry-joint masonry shear walls. It is found that geometrical imperfections of bricks and the absence of vertical precompression load can lead to very low equivalent dry-joint stiffness, which strongly affects the results, both in terms of collapse and damage limit state (DLS) loads, with practical implications for the engineering practice. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-02-17 2022-02-17T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/76640 |
url |
http://hdl.handle.net/1822/76640 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Savalle, N., Lourenço, P. B., & Milani, G. (2022). Joint Stiffness Influence on the First-Order Seismic Capacity of Dry-Joint Masonry Structures: Numerical DEM Investigations. Applied Sciences, 12(4), 2108. 2076-3417 10.3390/app12042108 https://www.mdpi.com/2076-3417/12/4/2108 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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