Dynamic investigation of an ancient masonry bell tower with operational modal analysis: a non-destructive experimental technique to obtain the dynamic characteristics of a structure
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Título: | Dynamic investigation of an ancient masonry bell tower with operational modal analysis: a non-destructive experimental technique to obtain the dynamic characteristics of a structure |
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Autor/es: | Foti, Dora | Ivorra, Salvador | Sabbà, Maria Francesca |
Grupo/s de investigación o GITE: | Grupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería de la Construcción, Obras Públicas e Infraestructura Urbana |
Palabras clave: | Bell tower | Dynamic behavior | Environmental vibration | Masonry structure | OMA |
Área/s de conocimiento: | Mecánica de los Medios Continuos y Teoría de Estructuras |
Fecha de publicación: | 16-nov-2012 |
Editor: | Bentham Open |
Cita bibliográfica: | FOTI, Dora; IVORRA CHORRO, Salvador; SABBÀ, Maria Francesca. “Dynamic investigation of an ancient masonry bell tower with operational modal analysis: a non-destructive experimental technique to obtain the dynamic characteristics of a structure”. The Open Construction and Building Technology Journal. Vol. 6 (2012). ISSN 1874-8368, pp. 384-391 |
Resumen: | This paper shows the results of an experimental analysis on the bell tower of “Chiesa della Maddalena” (Mola di Bari, Italy), to better understand the structural behavior of slender masonry structures. The research aims to calibrate a numerical model by means of the Operational Modal Analysis (OMA) method. In this way realistic conclusions about the dynamic behavior of the structure are obtained. The choice of using an OMA derives from the necessity to know the modal parameters of a structure with a non-destructive testing, especially in case of cultural-historical value structures. Therefore by means of an easy and accurate process, it is possible to acquire in-situ environmental vibrations. The data collected are very important to estimate the mode shapes, the natural frequencies and the damping ratios of the structure. To analyze the data obtained from the monitoring, the Peak Picking method has been applied to the Fast Fourier Transforms (FFT) of the signals in order to identify the values of the effective natural frequencies and damping factors of the structure. The main frequencies and the damping ratios have been determined from measurements at some relevant locations. The responses have been then extrapolated and extended to the entire tower through a 3-D Finite Element Model. In this way, knowing the modes of vibration, it has been possible to understand the overall dynamic behavior of the structure. |
URI: | http://hdl.handle.net/10045/25368 |
ISSN: | 1874-8368 |
DOI: | 10.2174/1874836801206010384 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © Foti et al.; Licensee Bentham Open. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/-licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.2174/1874836801206010384 |
Aparece en las colecciones: | INV - GRESMES - Artículos de Revistas |
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