基于SPT饱和砂土液化判别方法研究

目前,依据规范对饱和砂土液化进行判别主要是基于标准贯入试验(SPT),现行规范中基于SPT的判别方法有两种。采用这两种方法针对不同工况下的饱和砂土液化分别进行了计算,分析了饱和砂土埋深、地下水位深度及地震设防烈度对判定结果的影响规律,揭示了两种方法在判定结果上的差异性,为实际工程中饱和砂土液化判定方法的合理选择提供参考。

Study on Method of Liquefaction Evaluation for Saturated Sand Based on SPT

Now the evaluation of saturated sand liquefaction according to specification is mainly based on standard penetration test (SPT), and the current specification specifies two methods for evaluation based on SPT. This paper, by these two methods, carried out the calculation on the liquefaction of saturated sand under different working conditions respectively, analyzed the law that how the buried depth of the sand, groundwater level and earthquake seismic fortification intensity affect the evaluation result, revealed the differences thereof between the two methods, and provided a reference to select a reasonable method for evaluation of saturated sand liquefaction in engineering practice.