The geotechnical and structural aspects of damage – The Umbria-Marche Microzonation Project: outline of the project and the example of Fabriano results

 

The Gruppo Nazionale per la Difesa dai Terremoti together with the Servizio Sismico Nazionale performed the microzonation of 3 localities struck by the 1997 Central Italy sequence, characterized by at least 6 shocks with magnitude greater than 5 with a maximum value of ML 5.8.

 

The Gruppo Nazionale per la Difesa dai Terremoti together with the Servizio Sismico Nazionale performed the microzonation of 3 localities struck by the 1997 Central Italy sequence, characterized by at least 6 shocks with magnitude greater than 5 with a maximum value of ML 5.8.

The 3 localities were: Fabriano, situated in Marche region, at the foothills of Appenninic chain, that suffered moderate damages, but relevant for the area from an economic point of view; Nocera Umbra (Umbria Region), characterized by significant differences from a geological point of view, that suffered heavy damages; Sellano (Umbria Region) strongly affected by the quake, is a small village situated at the top of a hill in the Appenninic chain.

The microzonation program was based on the following investigations:

– hazard analysis via probabilistic and deterministic approach;

– detailed geological (1:5000 scale) and geotechnical investigations both in field and in laboratory;

– site effects analysis: temporary dense seismic networks were placed in the 3 localities to record both aftershocks and noise.

Results were provided taking into account of local administration requirements as well as national seismic code.

As an example of the procedure adopted to summarize the results in order to prepare the microzonation map and to issue recommendations for reconstruction, the case history of Fabriano is here presented.


  The Grup …


AUTORI: Marcellini A., Daminelli R., Tento A., Franceschina G., Pagani M.
RIG ANNO:2000 NUMERO:2
Numero di pagine: 28


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2001_2_28.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2001_2_28.pdf