Three formulae are derived to determine the coefficient of earth pressure at rest for cohesionless soil by using the stress vector based constitutive model.

• 利用将应力矢量的作用效应分解为球应力作用效应和应力比矢量作用效应叠加而建立的应力矢量本构模型,推出了无粘性土静止土压力系数的三个计算公式。