Liquefaction Evaluation of Sand Soil Foundation by Fuzzy Mathematic Principle

Based on the complexity of sand soil liquefaction and the fuzziness among the influencing factors of sand soil liquefaction performance,we apply fuzzy mathematic principle for selecting earthquake intensity,SPT number,average grain size,clay content,non-uniformity coefficient and effective overlying stress and other influencing indices.In addition,we establish a fuzzy evaluation model for sand soil liquefaction performance and make liquefaction evaluation of sand soil foundation,which will provide references for similar projects.