The Fuzzy Matter-Element Model on Evaluation of Sand Liquefaction Based on Coefficients of Combined Weights

The problem of sand liquefaction is still an important research direction for Geotechnical Engineering at present. Because of the complexity, uncertainty and the fuzziness of the effective factors for evaluating sand liquefaction, the entropy value theory is applied to combine with fuzzy matter-element and approach degree to establish a fuzzy matter-element model based on coefficients of weights that combine with an entropy weight and a weight attained by Delphi. The problem of weight allocation can be avoided by employing the method suggested in this paper. The calculation result for an example is compared with the standard perforation test (SPT). The results indicate that the proposed method is reasonable and practical.