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Seismic assessment of unreinforced masonry structures: a coupled mesoscale-DMEM approach

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Resumo:A numerical investigation is performed to investigate the potential of a discrete macro-element coupled with a mesoscale approach for the seismic assessment of unreinforced masonry structures. At first, parametric analyses are performed on a U-shape stone masonry prototype. Nonlinear static analyses are performed to investigate parameters that affect the results when a mesoscale masonry pattern representation is adopted. Results prove the suitability of a mesoscale representation of unreinforced masonry structures through a discrete macro-element approach. Furhthermore, it is demonstrated that an irregular placement of masonry units’ have a significant role in the structural response, either from a strength and ductility standpoints, when compared to a regular and periodic distribution of units.
Autores principais:Vadalà, Federica
Outros Autores:Cusmano, Valeria; Szabó, Simon; Funari, Marco Francesco; da Silva Luis, C. M.; Caliò, Ivo; Lourenço, Paulo B.
Assunto:Unreinforced masonry structures Mesoscale representation Irregular masonry pattern Discrete Macro-Element Method (DMEM)
Ano:2022
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho
Descrição
Resumo:A numerical investigation is performed to investigate the potential of a discrete macro-element coupled with a mesoscale approach for the seismic assessment of unreinforced masonry structures. At first, parametric analyses are performed on a U-shape stone masonry prototype. Nonlinear static analyses are performed to investigate parameters that affect the results when a mesoscale masonry pattern representation is adopted. Results prove the suitability of a mesoscale representation of unreinforced masonry structures through a discrete macro-element approach. Furhthermore, it is demonstrated that an irregular placement of masonry units’ have a significant role in the structural response, either from a strength and ductility standpoints, when compared to a regular and periodic distribution of units.