Seismic Assessment and Strengthening Interventions of Atop Single-Block Rocking Elements in Monumental Buildings: the Case Study of the San Felice sul Panaro Fortress

== Abstract ==

The paper describes the seismic assessment of the San Felice sul Panaro Fortress (Italy), focusing the attention on the activation of the out-of-plane response of the North walkway, characterized by the presence of an apparatus of merlons which highlighted a significant damage after the Emilia earthquake (2012). Nonlinear kinematic analyses have been performed, referring to a macro-block model and considering both the original configuration and two different possible strengthened strategies. For the definition of the seismic input in terms of floor spectra, the analyses also benefitted from the results obtained for the global response through a detailed 3D model of the whole fortress. The results were coherent with the observed damage after the seismic event, highlighting in this way the reliability of the adopted modelling strategies and analysis method, and allowed to outline possible strengthening solutions targeted to minimize the impact on the monument and guarantee its preservation.

== Full document ==
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== References ==

[1] Cattari, S., Degli Abbati, S., Ferretti, D., Lagomarsino, S., Ottonelli, D., Tralli, A.Damage assessment of fortresses after the 2012 Emilia. Bulletin of Earthquake Engineering (2014) 12(5):2333-2365. 

[2] Coïsson, E., Ferretti, D., Lenticchia, E. Analysis of damage mechanisms suffered by Italian fortified buildings hit by earthquakes in the last 40 years. Bulletin of Earthquake Engineering (2017) 15(12):5139–5166. 

[3] Degli Abbati, S., D’Altri, A.M., Ottonelli, D., Castellazzi, G., Cattari, S., de Miranda, S., Lagomarsino, S. Seismic assessment of interacting structural units in complex historic masonry constructions by nonlinear static analyses. Computers and Structures (2019) 213:51-71. 

[4] Orlando, A. Estense fortress at San Felice sul Panaro: modelling and seismic assessment. Master thesis (2014), University of Genova. 

[5] Ferrari, L., Goldoni, G. Behind the sign. Inside and outside the San Felice sul Panaro fortress restoration work. Master thesis (2014), University of Parma. 

[6] Lagomarsino, S., Ottonelli, D. A Macro-Block program for the seismic assessment (MBPERPETUATE). PERPETUATE - EC-FP7 project (2012), Deliverable D29, www.perpetuate.eu. 

[7] Lagomarsino, S. Seismic assessment of rocking masonry structures. Bulletin of Earthquake Engineering (2015) 13(1):97-128. 

[8] Degli Abbati, S., Lagomarsino, S. Out-of-plane static and dynamic response of masonry panels. Engineering Structures (2017) 150:803-820. 

[9] Degli Abbati, S., Cattari, S., Lagomarsino, S. Theoretically-based and practice-oriented formulations for the floor spectra evaluation. Earthquake and Structures (2018) 15(5):565-581. 

[10] CEN (2004), Eurocode 8: Design of Structures for Earthquake Resistance Part 1: General Rules, Seismic Actions and Rules for Buildings, European Code EN 1998 1, European Committee for Standardization, Brussels. 

[11] Castellazzi, G., D’Altri, A.M., Bitelli, G., Selvaggi, I., Lambertini, A. From laser scanning to fi nite element analysis of complex buildings by using a semi-automatic procedure. Sensors (2015) 15(8):18360–80. 

[12] Castellazzi, G., D’Altri, A.M., de Miranda, S., Ubertini, F. An innovative numerical modeling strategy for the structural analysis of historical monumental buildings. Engineering Structures (2017) 132:229–48. 

[13] NTC 2018. Italian Technical Code, Decreto Ministeriale 17/1/2018. “Aggiornamento delle Norme tecniche per le costruzioni”. Ministry of Infrastructures and Transportation, G.U. n.42 of 20/2/2018 (In Italian). 

[14] Melatti, V., D’Ayala, D., Modolo, E. Computational validation of dissipative device for the seismic upgrade of historic buildings. Proc. of 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering - Compdyn (2019), 24-26 June, Crete (Greece).