ANIDIS - L'ingegneria Sismica in Italia, ANIDIS XIX & ASSISi XVII - 2022

Dimensione del carattere:  Piccola  Media  Grande

Isolated artificial ground for the seismic safety in the urban reconstruction of Castelluccio di Norcia

marco mezzi, Alessandro Fulco

Ultima modifica: 2022-08-09


After a seismic event, the observation of the consequences to buildings and infrastructures always highlights extensive damage in ancient or historical district of the hit towns. Damage depends not only on the local amplification of the seismic action, but also on the quality of the materials and the construction technique. The negative consequences of traditional design and construction approaches appeared in all their negative evidence in all areas of Central Italy affected by recent seismic sequences of medium intensity (M5-M6) in 2016-17. Now the reconstruction should solve the problem to rebuild with safety but preserving the historical aspect of buildings and landscape. This paper presents a particular application of the known technique of seismic isolation for the integral seismic protection of an entire small village characterized by building of different characteristics also significantly irregular. The adoption of seismic isolation systems at city scale involves the construction of large floating slabs, supported by seismic isolators and/or dampers, above which to construct buildings that can present the aesthetic and constructive characteristics of the collapsed traditional ones. These large slabs should have the dimensions and elevations of the entire compartments. The solution allows a correct interpretation of the objective to rebuild "as it was, there where it was", safeguarding the landscape, prolonging the lifetime, and saving the expected cost.  The paper illustrates the application to the real case of the worldwide known village of Castelluccio di Norcia in Umbria (Central Italy).

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