Review of the liquefaction cases triggered by the 2009 L'Aquila earthquake (Italy)

This paper describes three cases of liquefaction triggered by the 2009 L’Aquila earthquake. The sites are located along the Aterno river banks, in alluvial soil deposits of common depositional environment, at various epicentral distances: L’Aquila – Ponte Rasarolo (1.5 km), Fossa (10 km) and Vittorito (45 km). Liquefaction analyses were carried out at each site, aimed at reproducing the observed phenomena, using simplified methods based on in situ test results. The paper illustrates comparatively the results of the liquefaction analyses at the three sites, taking into account the local soil conditions and the markedly different seismic demand.