含时间效应的膨胀岩膨胀本构关系

Study on time-dependent swelling constitute relation of swelling rock

指出目前广泛应用的膨胀岩一维膨胀本构关系Huder-Amberg模型的缺点,通过试验研究,得到了修正的膨胀岩一维膨胀本构关系。在此基础上,研究了岩石浸水条件下应变随时间的变化规律,并将时间效应引入膨胀本构模型,得到了膨胀岩一维非稳定膨胀的本构关系。最后基于金尼克条件将一维本构模型拓展到三维。

The widely used Huder-Amberg model for describing 1-D swelling constitutive relationship of rock is proved to be unsatisfied in some aspects. Based on the swelling test a revised 1-D swelling water is experimentally studied. With the time introduced into the swelling constitutive relationship, the 1-D transient swelling relation of swelling rock is developed and the 3-D constitutive relationship model is established based on the assumption that the swelling strain is caused by the first invariant function of stress tensor and the axial stress of Huder-Amberg uniaxial dilatancy test is agree with A · H· Jinike equation.