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The south oculus at Canterbury cathedral

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Resumo:The South Oculus at Canterbury Cathedral is a wrought iron space frame, consisting of two layers (Ferramenta and Grille) connected by tie bars (Pins). It is in very good condition despite its almost 850 years of history. The in situ survey of the Cathedral confirmed that the Ferramenta and the external grille are in general in relative good condition with the exception of some local failures. On the contrary, the pins are the most deteriorated part of the structure. An ambiental vibration test was carried out and the modal response of the structure was identified. In order to assess the safety of the oculus with respect to wind load, a model of the structure was built with the finite element software DIANA and calibrated using the results of the experimental campaign. The non linear analysis of the existing structure resulted in a safety factor of about ten, when compared with the wind load as specified by the EC1. In addition, parametric studies have highlighted the importance of the external grille for the structure and have provided an estimate of the consequences of a further deterioration in terms of the load bearing capacity of the Oculus.
Autores principais:Filippoupolitis, Marios
Ano:2011
País:Portugal
Tipo de documento:dissertação de mestrado
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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