Fuzzy Evaluation for Seismic Liquefaction Discrimination of Sands
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摘要: 利用模糊最优归类方法对砂土地震液化进行判定,通过综合地震烈度、平均粒径、标贯值和有效上覆应力等影响砂土地震液化的因素,利用最优归类隶属度向量作为砂土是否液化的判别指标,并经实例计算验证了该方法的可行性.该方法采用的指标在现场勘测中容易取得,计算过程简单明了,有一定实用价值。Abstract: 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.
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