Study on New Method of Accelerated Clay Creep Characteristics Test

Long-term creep tests, dynamic triaxial tests and corresponding scanning electron microscope(SEM) test were carried out for remolded saturated clay to study the way of rapid acquisition of the creep characteristics. The creep deformation and permanent deformation under the cyclic loading of soil with same initial state were analyzed. Based on the principle of static stress and dynamic stress equivalent, and the creep time and the cyclic number equivalent, a method using the relationship between stress strain-cyclic number to predict the creep deformation was established. The SEM test results showed that the clay microstructure changing trend of creep test and dynamic triaxial test were similar. The multilevel stress and long-term creep deformation can be predicted by the proposed method.