通常,如果在不排水条件下进行饱和砂土的三轴剪切试验,则可以发现有如图1所示的应力—应变化特性。这里的最大强度虽然可以马上确定,但对于大变形下的残余强度来说,是考虑最后的稳定状态(SS)还是考虑中间应变过程的准稳定状态(QSS),其强度值差别很大。但以前的研究却将这二者混淆了。因此,本文取5—20％ In general, if the triaxial shear test of saturated sand is performed under undrained conditions, the stress-strain change characteristic shown in Fig. 1 can be found. Although the maximum intensity here can be determined immediately, the magnitude of the strength varies greatly depending on whether the final steady state (SS) or the quasi-stable state (QSS) of the intermediate strain process is considered for the residual strength under large deformation. However, previous studies confused the two. Therefore, this article takes 5-20%