Publicação
Optimal intensity measures for probabilistic seismic demand models of historical masonry buildings considering in-plane and out-of-plane response
| Resumo: | This research focuses on the identification of optimal Intensity Measures (IMs) for the probabilistic seismic demand analysis of historical masonry buildings. Two case study structures are modelled in the OpenSees environment using three-dimensional macroelements that consider both the in-plane and out-of-plane response of masonry walls. A large set of real accelerograms is selected using unconditional selection, i.e., non-dependent on structural periods. After conducting non-linear time history analyses, IMs are ranked according to the notions of efficiency, practicability, proficiency, and sufficiency. Further, a composed measure is proposed as a combination of the IMs that exhibit the best coefficient of determination (R²) within the IM vs. Engineering Demand Parameter (EDP) regression. Consistent Probabilistic Seismic Demand Models (PSDMs) and fragility curves are derived from cloud analysis afterwards. |
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| Autores principais: | Caicedo, D. |
| Outros Autores: | Karimzadeh, Shaghayegh; Bernardo, V.; Lourenço, Paulo B. |
| Assunto: | Probabilistic seismic demand model Historical masonry buildings Outof-plane response Fragility curves. |
| Ano: | 2024 |
| 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 |
| Resumo: | This research focuses on the identification of optimal Intensity Measures (IMs) for the probabilistic seismic demand analysis of historical masonry buildings. Two case study structures are modelled in the OpenSees environment using three-dimensional macroelements that consider both the in-plane and out-of-plane response of masonry walls. A large set of real accelerograms is selected using unconditional selection, i.e., non-dependent on structural periods. After conducting non-linear time history analyses, IMs are ranked according to the notions of efficiency, practicability, proficiency, and sufficiency. Further, a composed measure is proposed as a combination of the IMs that exhibit the best coefficient of determination (R²) within the IM vs. Engineering Demand Parameter (EDP) regression. Consistent Probabilistic Seismic Demand Models (PSDMs) and fragility curves are derived from cloud analysis afterwards. |
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