This paper shows the results of an experimental and numerical analysis developed on the bell tower of Fiesole (Italy). The aim of this research is to identify and better understand the dynamic behavior of slender masonry structures when big bells swing inside the tower. In particular, a medieval bell tower with rectangular cross section of 5.10 x 4.10 m and a total height of 38 m has been analyzed. The research has been divided into three phases. The first one consists of the study of the natural frequencies and modal shapes of the tower by means of in-situ environmental and forced vibrations generated by bells. The second phase consist of the calibration process of the numerical mode by means of a genetic algorithm. Finally, it has been studied the resonance problems with the swinging of the bells by means of the numerical model.
Dynamic investigation of a slender medieval masonry bell tower. A preliminary approach / Bru, David; Betti, Michele; Ivorra, Salvador; Adam Jose Miguel, ; Bartoli, Gianni. - ELETTRONICO. - (2017), pp. 82-91. (Intervento presentato al convegno 2nd International Conference on Recent Advances in Nonlinear Models - Design and Rehabilitation of Structures. CoRASS 2017 tenutosi a Coimbra, Portogallo nel 16-17 Novembre, 2017).
Dynamic investigation of a slender medieval masonry bell tower. A preliminary approach
Betti Michele;Bartoli Gianni
2017
Abstract
This paper shows the results of an experimental and numerical analysis developed on the bell tower of Fiesole (Italy). The aim of this research is to identify and better understand the dynamic behavior of slender masonry structures when big bells swing inside the tower. In particular, a medieval bell tower with rectangular cross section of 5.10 x 4.10 m and a total height of 38 m has been analyzed. The research has been divided into three phases. The first one consists of the study of the natural frequencies and modal shapes of the tower by means of in-situ environmental and forced vibrations generated by bells. The second phase consist of the calibration process of the numerical mode by means of a genetic algorithm. Finally, it has been studied the resonance problems with the swinging of the bells by means of the numerical model.File | Dimensione | Formato | |
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