飽和砂地盤の地震時液状化抵抗と標準貫入試験のN値

Abstract

A more comprehensive collection of site conditions at various locations where some typeof liquefaction or no liquefaction was used to determine the relationship between liquefactionresistance ratio, standard penetration resistance and effective overburden pressure. Theresults are shown in Fig. 5, and the field value of cyclic stress ratio separating liquefiablefrom non-liquefiable conditions can be determined with acceptable accuracy from Eq. (7).Furthermore, the background of support for these Fig. 5 and Eq. (7) was considered andthe comparisons of author's proposal with previous methods, H. B. Seed (1976) or Iwasaki-Tatsuoka (1978), were made.