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一、前言近年来,砂土液化的研究日益深入,已有多种土模型和计算程序可用来分析地震等荷载下,砂土中动孔压的发生、发展和消散过程;目前已充分认识到土结构、细颗粒含量或粘粒含量、饱和度和渗透系数等因素对土壤液化性能的影响。在现场液化势的判别方面,也在努力寻找新的判别指标和方法,因为常用的标准贯入击数是一个不太稳定的指标。刚度法,或剪切
I. INTRODUCTION In recent years, the study of sand liquefaction has become more and more in depth, and a variety of soil models and calculation procedures have been used to analyze the occurrence, development, and dissipation of dynamic pore pressure in sandy soils under seismic and other loads; Effects of soil structure, fine particle content or clay content, saturation, and permeability coefficient on soil liquefaction performance. In terms of discriminating the liquefaction potential in the field, efforts are also being made to find new discriminant indicators and methods because the commonly used standard penetration number is a less stable indicator. Stiffness, or shearing