Interpretazione degli effetti sismici e analisi dinamica dei collassi in Ostia Antica

The working methods of Roman builders confirm the advanced knowledge of consolida- tion and repair techniques, so much so that quite a few of their buildings are still con- sidered stable without undergoing further interventions. For those ancient structures that have collapsed, signs of destructive events remain, allowing a chronology of events to be reconstructed, as in the ancient Roman port of Ostia. The impression given by the excava- tions in Ostia regarding the causes and dynamics of collapse, which affected both ordinary and monumental buildings, is that of a center which, in addition to natural degradation due to progressive abandonment and the ravages of man, suffered the concomitant dis- astrous effects of several natural disasters. Therefore, the contribution focuses on some structural analysis results and two seismic measurement campaigns carried out in the archaeoseismological field to understand the causes and modes of collapse that affected several building structures.