PSI - Issue 44

Carolina Bazzani et al. / Procedia Structural Integrity 44 (2023) 171–178 Carolina Bazzani et al. / Structural Integrity Procedia 00 (2022) 000–000

178

8

5. Conclusions

The purpose of this work was to suggest a procedure to represent the result of seismic risk analysis at the territorial scale and the formulation of post-earthquake damage scenarios. Initially, the characterization of the built environment was carried out through the CARTIS methodology which allows the subdivision of the territory into homogeneous sectors or zones starting from the building typology point of view. About the seismic vulnerability analysis, the methodology of Lagomarsino & Giovinazzi (2006) and Bernardini et al. (2007a, b), was applied using also the modified version for the low-intensity damage scenarios definition according to the formulation proposed by Menichini et al. (2022). Then a comparison among the vulnerability methods proposed by EMS98, Lagomarsino et al. (2021), Zuccaro & Cacace (2015), and Zuccaro et al. (2020) is carried out. After that, plausible damage scenarios were assessed through the graphical representation of vulnerability curves, related to typologies and sectors. Therefore, the percentages of unusable buildings, due to a possible seismic event, were calculated, using the formulation for estimating unusable buildings proposed by Menichini et al. (2022). Finally, a comparison of the results in terms of unusable buildings in the historic centre sector for relatively low macroseismic intensity is carried out. It is obtained that the percentage of unusable buildings estimated from the average damage formulation of Menichini et al. (2022) turns out to be the same as that defined in the AeDES form (26%). Instead, the percentages of unusable buildings derived from the average damage formulation of Lagomarsino & Giovinazzi (2006) and Bernardini et al. (2007a, b), and the one derived from the S.A.V.E. method are lower than the on-field observed data, while the one derived from the average damage formulation in the updated version of the Macroseismic Method of Lagomarsino et al. (2021), which is about 23%, is close to the actual on-field observed data. Acknowledgements The authors thank the Seismic Prevention Office - Seismic Division of Tuscany Region for sharing the data of the post-seismic AeDES survey forms and the S2R team for the kindly collaboration in the development of the project. References Bernardini, A., Giovinazzi, S., Lagomarsino, S. & Parodi, S. 2007.a. Matrici di probabilità di danno implicite nella scala EMS-98. In: XII Convegno ANIDIS, 10-14 giugno 2007 . Pisa, Italia. Bernardini, A., Giovinazzi, S., Lagomarsino, S. & Parodi, S. 2007.b. Vulnerabilità e previsione di danno a scala territoriale secondo una metodologia macrosismica coerente con la scala EMS-98. In: XII Convegno ANIDIS, 10-14 giugno 2007 . Pisa, Italia. Grünthal, G. 1998. European macroseismic scale 1998 . European Seismological Commission (ESC) Italian Civil Protection Department 2018. National Risk Assessment 2018. Overview of the potential major disasters in Italy. Lagomarsino, S., Cattari, S. & Ottonelli, D. 2021. The heuristic vulnerability model: fragility curves for masonry buildings. Bulletin of Earthquake Engineering (19)8: 3129–3163. Lagomarsino, S. & Giovinazzi, S. 2006. Macroseismic and mechanical models for the vulnerability and damage assessment of current buildings. Bulletin of Earthquake Engineering (4)4: 415–443. Menichini, G., Nistri, V., Boschi, S., Del Monte, E., Orlando, M. & Vignoli, A. 2022. Calibration of vulnerability and fragility curves from moderate intensity Italian earthquake damage data. International Journal of Disaster Risk Reduction (67): 102676. Zuccaro, G. 2004. Inventario e vulnerabilità del patrimonio edilizio residenziale del territorio nazionale, mappe di rischio e perdite socio– economiche. Napoli: CD-ROM . Zuccaro, G. & Cacace, F. 2015. Seismic vulnerability assessment based on typological characteristics. The first level procedure “SAVE.” Soil Dynamics and Earthquake Engineering (69): 262–269. Zuccaro, G., De Gregorio, D., Dolce, M., Speranza, E. & Moroni, C. 2014. Manuale per la compilazione della scheda di 1 livello per la caratterizzazione tipologico-strutturale dei comparti urbani costituiti da edifici ordinari (Manual for the compilation of the 1st level form to characterize urban districts with respect to the . Progetto ReLUIS (2016). Zuccaro, G., Perelli, F.L., De Gregorio, D. & Cacace, F. 2020. Empirical vulnerability curves for Italian masonry buildings: evolution of vulnerability model from the DPM to curves as a function of acceleration. Bulletin of Earthquake Engineering (19)8: 3077–3097.