ABSTRACT
This paper evaluates the reliability of different approaches used to determine the factor of safety against liquefaction, namely Eurocode 8 (1998) and Idriss and Boulanger (2008), at three real sites struck by the 2016 Kumamoto earthquake (Japan). The computed factors of safety are compared with results from a series of numerical analyses performed in the object-oriented software framework OpenSees. The results show that the different methods yield similar factors of safety, which are consistent with the numerical results and field observations. Additionally, the numerical results confirm the high liquefiability of the abovementioned sites in which liquefaction is predicted to be triggered on the surface and/or at some depth below the ground surface, based on the deposit nature and the characteristics of the applied ground motion.
