Dynamic validation of post-earthquake safety interventions in Mirandola, 2012 Emilia earthquake

After the seismic events of May 20th and 29th 2012 in Emilia, an important number of monumental buildings underwent severe damage. In a few structures, partial collapse mechanisms have been observed (i.e. façade tilting, out-of-plane overturning of panels…). In this paper, the Chiesa del Gesù and the cathedral of Santa Maria Maggiore, both located in Mirandola (Italy), have been selected in order to study typical post-earthquake safety interventions. Indeed, the real effectiveness of seismic repair and rehabilitation is difficult to evaluate because of the intrinsic complexity of post-earthquake scenarios. In order to validate the efficacy of the interventions, dynamic tests have been performed in the pre-intervention and post-intervention conditions, and calibrated FE models have been used as testing tools for assessing the safety levels achieved