研究表明，主应力方向对在不排水条件下饱和松砂的单调剪切特性具有显著影响。
It was found that the undrained shear behavior of loose sands was considerably dependent on the orientation of the principal stress.
本文目的是探索饱和亚砂土层在不排水条件下，沉桩后，抗液化能力的改善效果。
This paper aims at the improvement of the capacity of saturated sandy loam against liquefaction without drain after pile-driving.
实际工程中求解和测定吸力比较困难，特别在不排水条件下，吸力并非常量，从而难以确定。
It is very difficult to resolve or measure matric suction in engineering practice, because the matric suction is not constant especially under undrained condition.
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