On-site testing has a fundamental role in construction assessment; however, often the results of local- ized tests do not provide satisfactory information to clearly evaluate the building behaviour. Structural health monitoring, and the Ambient Vibration Test (AVT) in particular, provides global information on the overall dynamic characteristics. This paper, through the case study of San Giovanni’s church in Macerata, aims to propose an experi- mental procedure to identify the global behaviour of a large masonry building by merging local meas- urements and optimizing the position of a reasonable number of sensors. The case study of San Giovanni is particularly interesting: first for the features of the building – the construction consists of the characteristic Latin cross, the central circular dome, the tower bell, the annex convent and the oratory, and second for the state of the building – San Giovanni was con- demned after seismic events in 1999 and it has yet to reopen following the central Italy earthquake in 2016. However, in the next future, the church will finally return to the community thanks to local and European funds. PRiSMa Lab (Proof and Research in Structures and Materials of Roma Tre University) carried out an extensive in-situ testing campaign – including a geometric survey, video endoscopy, flat-jack tests, sonic tomography and an ambient vibrations test – to investigate the state of the building. Operational Modal Analysis (OMA) was used to assess the dynamic behaviour of the church. Five different ambi- ent vibration measurements were recorded in the most relevant parts of the building, the extracted modes were then merged and finally the dynamic global behaviour was identified.
Baggio, C., Sabbatini, V., Santini, S., Sebastiani, C. (2020). Multi-run operational modal analysis of a masonry historical church: the case study of San Giovanni in Macerata. In Construction Pathology, Rehabilitation Technology and Heritage Management (pp.1038-1046). Granada.
Multi-run operational modal analysis of a masonry historical church: the case study of San Giovanni in Macerata
Baggio C.;Sabbatini V.;Santini S.;Sebastiani C.
2020-01-01
Abstract
On-site testing has a fundamental role in construction assessment; however, often the results of local- ized tests do not provide satisfactory information to clearly evaluate the building behaviour. Structural health monitoring, and the Ambient Vibration Test (AVT) in particular, provides global information on the overall dynamic characteristics. This paper, through the case study of San Giovanni’s church in Macerata, aims to propose an experi- mental procedure to identify the global behaviour of a large masonry building by merging local meas- urements and optimizing the position of a reasonable number of sensors. The case study of San Giovanni is particularly interesting: first for the features of the building – the construction consists of the characteristic Latin cross, the central circular dome, the tower bell, the annex convent and the oratory, and second for the state of the building – San Giovanni was con- demned after seismic events in 1999 and it has yet to reopen following the central Italy earthquake in 2016. However, in the next future, the church will finally return to the community thanks to local and European funds. PRiSMa Lab (Proof and Research in Structures and Materials of Roma Tre University) carried out an extensive in-situ testing campaign – including a geometric survey, video endoscopy, flat-jack tests, sonic tomography and an ambient vibrations test – to investigate the state of the building. Operational Modal Analysis (OMA) was used to assess the dynamic behaviour of the church. Five different ambi- ent vibration measurements were recorded in the most relevant parts of the building, the extracted modes were then merged and finally the dynamic global behaviour was identified.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
