Application of OMA technique to masonry slender towers: FEM updating and sensitivity analysis

Application of OMA technique to masonry slender towers: FEM updating and sensitivity analysis

Davide Li Rosi, Loredana Contrafatto, Salvatore Gazzo, Leopoldo Greco, Massimo Cuomo

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Abstract. Bell towers are masonry slender structures prone to damage caused by vibrations due to human activities, such as motor-vehicle traffic and operating machines in building sites, to bells’ ringing and, of course, vulnerable to strong vibrations induced by earthquakes. Several studies with Operational Modal Analysis applications to masonry historical slender towers demonstrate that their modal properties are typical and recurrent and depend mainly on the geometric features determining mass distribution and on the boundary conditions due to adjacent buildings and subjacent foundation soil. In the paper a sensitivity analysis of modal frequency obtained by FEM eigenvalue analysis to the soil modelling approach is carried out. The case study is the historical bell tower of San Giuseppe in Aci Castello church. The natural frequencies of the tower, identified through OMA procedure are considered for comparison.

OMA, Masonry, Bell Tower

Published online 3/17/2022, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Davide Li Rosi, Loredana Contrafatto, Salvatore Gazzo, Leopoldo Greco, Massimo Cuomo, Application of OMA technique to masonry slender towers: FEM updating and sensitivity analysis, Materials Research Proceedings, Vol. 26, pp 587-592, 2023


The article was published as article 95 of the book Theoretical and Applied Mechanics

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