Abstract:In order to analyze the deformation characteristics of compacted loess and influence of loading rate,K0 consolidation tests under continuous loading with different rates are carried out on geotechnical digital systems (GDS) triaxial apparatus. The results show that there is no excess pore water pressure in the loading stage. Stress-strain curve in the loading stage can be divided into two phases. The previous phase can be fitted with power function and the second phase with linear function. The influence of loading rate on the stress-strain relation in the loading stage is not obvious. The value of K0 at the end of loading stage decreases with the increase of loading rate. During the stage with steady pressure,the strain-time curve can be fitted with hyperbolic function;and the influence of loading rate on the strain-time behavior in this stage is obvious. At last the model describing the strain-stress-time relation during the stage of continuous loading is proposed. It provides references to the study of deformation characteristics during the stage of continuous loading and the settlement characteristics of loess embankment.