The ground motion grade – 3 microzonation of Sellano

 

The seismic events that hit the Umbria and Marche Regions in 1997-1998 represent recurrent events in the seismic history of this area. These events are mostly characterised by relatively moderate magnitudes; nevertheless in 1997—l998 they caused extensive damage in different towns, such as in the town of Sellano (Umbria Region). In the present paper, the geotechnical characteristics of the soil involved are examined in order to find the explanation for this phenomenon.

 

The seismic events that hit the Umbria and Marche Regions in 1997-1998 represent recurrent events in the seismic history of this area. These events are mostly characterised by relatively moderate magnitudes; nevertheless in 1997—l998 they caused extensive damage in different towns, such as in the town of Sellano (Umbria Region). In the present paper, the geotechnical characteristics of the soil involved are examined in order to find the explanation for this phenomenon.

The three most significant shocks which occorre during the 1997-1998 Umbria-Marche seismic sequence are chosen as “scenario” earthquakes. Then, on the basis of the site characterisation of the Sellano area, the soil response is analysed.

For each different geological zone and for the input motions considered as "scenario" earthquakes the response spectra at the free field are developed. Finally, the seismic, geotechnical hazard maps in terms of maximum amplification ratio and in terms of maximum horizontal acceleration at the soil surface are drown-up.


  The seis …


AUTORI: Capilleri P., Massimino M.R., Maugeri M.
RIG ANNO:2000 NUMERO:4
Numero di pagine: 97


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2001_4_97.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2001_4_97.pdf