Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)

Detalhes bibliográficos
Autor(a) principal: Pereira, João Miguel
Data de Publicação: 2015
Outros Autores: Campos, José, Lourenço, Paulo B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/39063
Resumo: The vulnerability of the masonry envelop under blast loading is considered critical due to the risk of loss of lives. The behaviour of masonry infill walls subjected to dynamic out-of-plane loading was experimentally investigated in this work. Using confined underwater blast wave generators (WBWG), applying the extremely high rate conversion of the explosive detonation energy into the kinetic energy of a thick water confinement, allowed a surface area distribution avoiding also the generation of high velocity fragments and reducing atmospheric sound wave. In the present study, water plastic containers, having in its centre a detonator inside a cylindrical explosive charge, were used in unreinforced masonry infills panels with 1.7m by 3.5m. Besides the usage of pressure and displacement transducers, pictures with high-speed video cameras were recorded to enable processing of the deflections and identification of failure modes. Additional numerical studies were performed in both unreinforced and reinforced walls. Bed joint reinforcement and grid reinforcement were used to strengthen the infill walls, and the results are presented and compared, allowing to obtain pressure-impulse diagrams for design of masonry infill walls.
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spelling Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)Infill wallsOut-of-plane loadingBlast loadingWBWGEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThe vulnerability of the masonry envelop under blast loading is considered critical due to the risk of loss of lives. The behaviour of masonry infill walls subjected to dynamic out-of-plane loading was experimentally investigated in this work. Using confined underwater blast wave generators (WBWG), applying the extremely high rate conversion of the explosive detonation energy into the kinetic energy of a thick water confinement, allowed a surface area distribution avoiding also the generation of high velocity fragments and reducing atmospheric sound wave. In the present study, water plastic containers, having in its centre a detonator inside a cylindrical explosive charge, were used in unreinforced masonry infills panels with 1.7m by 3.5m. Besides the usage of pressure and displacement transducers, pictures with high-speed video cameras were recorded to enable processing of the deflections and identification of failure modes. Additional numerical studies were performed in both unreinforced and reinforced walls. Bed joint reinforcement and grid reinforcement were used to strengthen the infill walls, and the results are presented and compared, allowing to obtain pressure-impulse diagrams for design of masonry infill walls.This work was performed under Project CH-SECURE, with reference PTDC/ECM/120118/2010, funded by the Portuguese Foundation of Science and Technology - FCT. The authors acknowledge the support. The first author also acknowledges the support from his PhD FCT grant with the reference SFRH/BD/45436/2008.ElsevierUniversidade do MinhoPereira, João MiguelCampos, JoséLourenço, Paulo B.2015-062015-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/39063eng0141-029610.1016/j.engstruct.2015.02.036http://www.sciencedirect.com/science/article/pii/S0141029615001352info: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:RCAAP2023-07-21T12:06:10Zoai:repositorium.sdum.uminho.pt:1822/39063Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:56:46.202370Repositório 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 Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
title Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
spellingShingle Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
Pereira, João Miguel
Infill walls
Out-of-plane loading
Blast loading
WBWG
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
title_short Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
title_full Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
title_fullStr Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
title_full_unstemmed Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
title_sort Masonry infill walls under blast loading using confined underwater blast wave generators (WBWG)
author Pereira, João Miguel
author_facet Pereira, João Miguel
Campos, José
Lourenço, Paulo B.
author_role author
author2 Campos, José
Lourenço, Paulo B.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Pereira, João Miguel
Campos, José
Lourenço, Paulo B.
dc.subject.por.fl_str_mv Infill walls
Out-of-plane loading
Blast loading
WBWG
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
topic Infill walls
Out-of-plane loading
Blast loading
WBWG
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
description The vulnerability of the masonry envelop under blast loading is considered critical due to the risk of loss of lives. The behaviour of masonry infill walls subjected to dynamic out-of-plane loading was experimentally investigated in this work. Using confined underwater blast wave generators (WBWG), applying the extremely high rate conversion of the explosive detonation energy into the kinetic energy of a thick water confinement, allowed a surface area distribution avoiding also the generation of high velocity fragments and reducing atmospheric sound wave. In the present study, water plastic containers, having in its centre a detonator inside a cylindrical explosive charge, were used in unreinforced masonry infills panels with 1.7m by 3.5m. Besides the usage of pressure and displacement transducers, pictures with high-speed video cameras were recorded to enable processing of the deflections and identification of failure modes. Additional numerical studies were performed in both unreinforced and reinforced walls. Bed joint reinforcement and grid reinforcement were used to strengthen the infill walls, and the results are presented and compared, allowing to obtain pressure-impulse diagrams for design of masonry infill walls.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
2015-06-01T00:00:00Z
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/1822/39063
url http://hdl.handle.net/1822/39063
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0141-0296
10.1016/j.engstruct.2015.02.036
http://www.sciencedirect.com/science/article/pii/S0141029615001352
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution 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
repository.mail.fl_str_mv
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