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该文通过对改进一次二阶矩法可靠性分析研究,提出了一种建立于标准贯入击数极限状态方程的地震液化可靠度评估方法。用该方法的判别结果与实测结果一致,并且能计算出液化概率,减小了误判率,弥补了确定性方法的不足,为砂土液化势评估提供了一种有效的不确定性砂土液化评价的新方法。
In this paper, a reliability assessment method of seismic liquefaction based on the limit state equation of standard penetration number is proposed by analyzing the reliability of the improved second order moment method. The result of the method is consistent with the measured result, and the liquefaction probability can be calculated, the misjudgment rate can be reduced and the lack of certainty method can be compensated, which provides an effective uncertainty for the evaluation of sand liquefaction potential. A new method of liquefaction evaluation.