In the process of the triaxial creep test of Q2 loess in Xianyang region of the center Shaanxi plain

the strain-time curves and the isochronous stress-strain curves in various confining pressure and moisture content could be got.By analyzing the trial curves of the confining pressure and moisture content versus creep property of this loess

apositive correlation between deformation of creep and moisture content is established

while a negative correlation between the deformation of creep and confining pressure is found.Further more

in fitting analysis

the soil creep failure stress increases in line with the confining pressure but decreases logarithmically along the moisture content.According to aforementioned analysis

ameliorating the parameter property and structure of common 5-component model

a 7-component nonlinear creep model could be employed

describing the accelerating creeping of Q2 loess capably.Finally

an acceptable optimum could be obtained by applying this fitting identity to test data.