Application of deterministic and probabilistic ‐ SPT based liquefaction assessment triggering models

Abstract

AbstractThis paper presents an application of the SPT based liquefaction triggering models (both deterministic and probabilistic) proposed by Boulanger and Idriss (2010). Several authors consider deterministic approaches to be beneficial in areas of high seismicity. The procedure for predicting probability of liquefaction however can be alternative tool of analysis that could complement the deterministic procedures by providing information on the relative risk of liquefaction between design alternatives. It is used to estimate the probability of liquefaction for a given design earthquake magnitude and acceleration. Both deterministic and probabilistic approaches were used for a liquefaction susceptible soil profile for different percentage of fines. The location is in Ohrid, as a specific area with high groundwater tables, complex geological conditions and medium level seismicity. The potential of liquefaction is determined for all layers of the soil. The results show that the probabilistic approaches shouldn't be excluded in this assessment and can be more favourable for areas of intermediate seismicity.