PSI - Issue 44

Carpanese Pietro et al. / Procedia Structural Integrity 44 (2023) 1752–1759 Carpanese Pietro et al./ Structural Integrity Procedia 00 (2022) 000–000

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4. Conclusions The paper provides mechanical seismic fragility curves for different macro-typologies of Italian residential masonry buildings, both for their as-built configuration and also simulating possible seismic retrofit interventions. The software Vulnus 4.0 was used to produce these curves, and the procedure by Donà et al. 2021 was followed to create fragility sets that could be representative for each macro-typology and each intervention taken into consideration. The fragility curves developed make it possible to produce seismic risk maps concerning the residential masonry building heritage in Italy. These show the difference in terms of economic losses between the as-built configuration and the cases where different retrofit interventions are applied, and are useful visualization means for economic losses especially when the results are normalized on the exposure of Italian municipalities. The maps presented in this work might become essential tools for authorities and risk management stakeholders (such as the Department of Civil Protection), in order to promote targeted risk mitigation plans at national level. A possible future development of this work is to carry out more detailed risk analyses considering, for example, indirect economic losses and casualties. Lastly, by estimating the cost of the interventions, it will be possible to perform cost-benefit analyses to evaluate the economic effectiveness of the interventions in different zones of Italy. Acknowledgements The authors would like to thank the Italian Department of Civil Protection, which funded this study as part of the ReLUIS-DPC Project 2019-2021 - Work Package 4: MARS (MAps of Risk and Scenarios of seismic damage) - Task 6: Preventive strategies. References Bernardini, A., Gori, M., Modena, C., 1990. 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(eds.), Strengthening and retrofitting of existing structures, Series: Building Pathology and Rehabilitation, Vol. IX, Springer, 59-84; https://doi.org/10.1007/978-981-10-5858-5_3. da Porto, F., Donà, M., Rosti, A., Rota, M., Lagomarsino, S., Cattari, S., Borzi, B., Onida, M., De Gregorio, D., Perelli, F. L., Del Gaudio, C., Ricci, P., Speranza, E., 2021. Comparative analysis of the fragility curves for Italian residential masonry and RC buildings. Bull. Earthq. Eng, 19(8), 3209–3252, https://doi.org/10.1007/s10518-020-01009-5 Di Ludovico, M., Prota, A., Moroni, C., Manfredi, G., Dolce, M., 2017a. Reconstruction process of damaged residential buildings outside historical centres after the L'Aquila earthquake: part I—"light damage" reconstruction. Bull Earthq Eng. https://doi.org/10.1007/s1051 8-016-9877-8 Di Ludovico, M., Prota, A., Moroni, C., Manfredi, G., Dolce, M., 2017b. 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