SAHC2021 - The unbuilt Musmeci parabolic cross vault reinvented as a dry-masonry structure
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12th International Conference on Structural Analysis of Historical Constructions (SAHC 2021)
The unbuilt Musmeci parabolic cross vault reinvented as a dry-masonry structure"
Claudio Intrigila, Nicola A. Nodargi and Paolo Bisegna
Department of Civil Engineering and Computer Science (DICII)
University of Rome Tor Vergata
Keywords: Cross Vault, Musmeci Vault, Dry-masonry Structure, Limit Analysis, Parabolic Masonry Arch, Spreading Supports
Abstract. This paper investigates the unbuilt Musmeci parabolic vault, reinventing the original reinforced concrete structure as a dry-masonry vault. In the framework of rigid no-tension constitutive model with no sliding, the equilibrium analysis is conducted with the aim of evaluating the design thickness of the masonry vault, respecting the original Musmeci shape. A parametric survey is performed to assess the minimum thickness of the vault and its structural capacity under spreading supports. Attention is focused on the different collapse mechanisms and the corresponding crack patterns. For a better insight into the behaviour of the parabolic vault, the relevant case of the parabolic arch is first analysed and discussed. The numerical results show the feasibility of the project, with a thickness comparable with that proposed by Musmeci.
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