The preservation of Cultural Heritage assets from natural and man-made disasters is of great importance for communities because of their architectural and social value. Lack of any hazard-resisting design, material typology and degradation due to ageing strongly affect the behaviour of Cultural Heritage assets. In this context, Structural Health Monitoring systems can help stakeholders to control the behaviour of heritage constructions, to improve the estimation of their residual life expectancy and to optimize maintenance and retrofitting interventions. This paper presents the preliminary results of the modal identification of the transept of San Francesco church in Pisa. An experimental campaign aimed at measuring the structural response under environmental vibrations was performed, and Operational Modal Analysis was applied to quantify modal properties (frequencies and mode shapes). Data were then used to calibrate the elastic parameters of a refined numerical model. Issues and practical considerations related to the design and installation of dynamic monitoring systems for complex masonry constructions (such as the one under investigation) were derived to provide practitioners with practical guidance. © 2020 European Association for Structural Dynamics. All rights reserved.
Modal identification of the San Francesco church in Pisa, Italy
Emanuele Lorenzo
;Chellini Giuseppe;De falco Anna;Carlo Resta;
2020-01-01
Abstract
The preservation of Cultural Heritage assets from natural and man-made disasters is of great importance for communities because of their architectural and social value. Lack of any hazard-resisting design, material typology and degradation due to ageing strongly affect the behaviour of Cultural Heritage assets. In this context, Structural Health Monitoring systems can help stakeholders to control the behaviour of heritage constructions, to improve the estimation of their residual life expectancy and to optimize maintenance and retrofitting interventions. This paper presents the preliminary results of the modal identification of the transept of San Francesco church in Pisa. An experimental campaign aimed at measuring the structural response under environmental vibrations was performed, and Operational Modal Analysis was applied to quantify modal properties (frequencies and mode shapes). Data were then used to calibrate the elastic parameters of a refined numerical model. Issues and practical considerations related to the design and installation of dynamic monitoring systems for complex masonry constructions (such as the one under investigation) were derived to provide practitioners with practical guidance. © 2020 European Association for Structural Dynamics. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
