场地饱和砂土液化是工程中普遍存在的不良地质作用,海外工程项目业主多要求采用美国或欧盟标准规范判别地震液化,与中国相关标准规范推荐做法有很大区别。根据标准贯入测试结果,采用NCEER法、BoulangerIdriss 2014法和抗震规范法,对国内外已发生的230个地震实例的液化判别效果进行分析讨论。结果显示,三种方法的结果基本符合实际,BoulangerIdriss 2014法成功率最高,抗震规范法最简便且最保守。建议海外项目可采用NCEER法和BoulangerIdriss 2014法,国内项目可采用抗震规范法。分析结果可为标准贯入判别地震液化评估提供参考。

 Liquefaction of saturated soils on-site is a widespread adverse geological phenomenon encountered in engineering projects. Most overseas project owners mandate adherence to the US or EU standards for assessing soil liquefaction risks. Notably, there are significant differences between the Chinese codes and the US or EU standards in this aspect. Based on the results of Standard Penetration Test (SPT), this study applies three liquefaction triggering procedures the NCEER Method, Boulanger-Idriss 2014 Method and the method recommended by the Chinese Code for Seismic Design of Buildings to analyse and discuss 230 earthquake cases worldwide. The results show that these methods generally provide reliable assessments that are consistent with reality. Boulanger-Idriss 2014 Method aligns most closely with the actual conditions, whereas the Chinese seismic method is noted for its simplicity, easy of use, and conservative nature. For overseas projects, Boulanger-Idriss 2014 Method and NCEER Method are recommended, while the Chinese seismic code method is deemed suitable for domestic projects. The results provide valuable reference for earthquake-induced liquefaction assessment using Standard Penetration Test.