Abstract
This article proposes a multidisciplinary approach for the assessment of seismic damage from the perspective of conservation and prevention. A comparison of the state of damage has been carried out in a case study, St. Salvatore church in Acquapagana (MC), as an example of church, which underwent two important seismic events in the Central Italy area, the 1997 and the 2016 earthquakes. The comparison of the state of damage passes through the following stages: (a) the territorial seismic overview; (b) the historical description and material analysis; (c) the identification of macro-elements with activated damage mechanisms; (d) the comparison between the two seismic events both from a territorial- and building-scale perspective. This work puts together the archived and the on-site survey data with those elaborated starting from seismogenic information, available from the National Seismological Institute, and it provides a strategy also for other similar conditions. This work is to be considered a contribution to a wider study that could be carried out in the areas hit by the 2016 earthquake. It could also represent a way to collect documentation in the post-earthquake phase, improving the effectiveness of procedures currently applied to the first level of damage assessment.
Highlights
Earthquakes pose a threat to our cultural heritage assets, constituted in part by churches.The seismic risk of the Italian territory is well known because of the many earthquakes that have occurred over the years
Since the 1976 Friuli earthquake, which caused severe damage to the heritage building stock, churches have started to be studied in relation to their evidence of vulnerability under seismic actions
The post-earthquake observation of damage led to the elaboration of the forms of damage assessment of churches, whose current version [1] was approved with Decree DPCM of 23 February
Summary
Earthquakes pose a threat to our cultural heritage assets, constituted in part by churches. The seismic risk of the Italian territory is well known because of the many earthquakes that have occurred over the years This type of risk is strictly related to the vulnerability of the buildings; working on them is necessary to preserve the national cultural heritage asset. The multidisciplinary approach in the following work is achieved observing the impact of the earthquake on the church case study from different perspectives, taking into account several aspects: the seismogenic system, the registered peak ground acceleration (PGA) values, the history of the church with the analysis of the masonry walls and the executed interventions with the two post-earthquake states of damage (1997–2016).
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