基于标准贯入试验的国内外砂土液化判别法在巴基斯坦PKM高速公路工程中的应用对比研究

Application of Contrastive Study on Sand Liquefaction Discrimination Method Based on Standard Penetration Test (SPT) in Pakistan PKM Expressway Project

摘要: 地震灾害中砂土液化易引起路基不均匀沉降，造成路面及桥涵结构物破坏，引起安全问题。本文针对砂土液化问题，分析了砂土液化机理及影响因素，分别介绍了国内外规范基于标准贯入试验判别饱和砂土液化的判别方法，并对比了国内外标准贯入试验锤击数的处理方法，探讨了不同规范之间的异同点。结合巴基斯坦PKM高速公路工程案例，对比了不同规范判别结果的差异。

Abstract: The liquefaction of sand in earthquake is easy to cause uneven settlement of the pavement and structure, leading to safety problems. Aiming at the liquefaction problem, this paper analyzes its mechanism and influencing factors and respectively introduces the identification methods of the saturated sand liquefaction based on standard penetration test at home and abroad, and compares the processing methods of hammering times in the test at home and abroad, and discusses the similarities and differences between different specifications. In the case of the PKM expressway project, the difference between the discriminant results of different specification is compared.