Seismic Risk Assessment for Masonry Buildings Typologies from L'Aquila 2009 Earthquake Damage Data

In this study a seismic risk analysis of masonry buildings based on damage data of L'Aquila 2009 earthquake is presented. Typological loss curves and Expected Annualized Losses (EAL) values are presented, starting from the data collected into AeDES forms available in the Da.D.O. database. A completion is proposed for improving the sample statistical significance, and correctly including undamaged and not surveyed buildings that suffered low shaking values. Finally, the loss curves proposed permits to economically assess the effectiveness of some local and very frequent interventions (such as chains/ring beams), and their consequent impact in seismic risk mitigation.

Automated summary

This study presents a seismic risk analysis of masonry buildings based on the damage data of the 2009 L'Aquila earthquake. Typological loss curves and Expected Annualized Losses (EAL) values are derived from the AeDES forms in the Da.D.O. database. A supplemental approach is proposed to improve the statistical significance of the sample and to include undamaged and not surveyed buildings that experienced low shaking values. The proposed loss curves allow for the economic assessment of the effectiveness of local interventions, such as chains/ring beams, in mitigating seismic risk.