Fuzzy Evaluation for Seismic Liquefaction Discrimination of Sands

Fuzzy optimal evaluation is adopted to discriminate seismic liquefaction of sands.Considering the affects of the earthquake intensity,mean diameter of sand grain,SPT counts and effective overburden stress,the optimal subordinate vector is determined to act as the code of liquefaction.Combining with case histories,the model applied to evaluating seismic liquefaction is demonstrated.