Effect of Moisture Content on the Permanent Strain of Yellow River Alluvial Silt under Long-Term Cyclic Loading

The Yellow River alluvial silt has unique engineering properties and is unstable when encountering moisture. mechanical of subgrade can be impaired by the increase in moisture content due to rainwater infiltration, which a negative effect on traffic safety. To further reveal influence deformation characteristics silt, series monotonic cyclic triaxial tests were conducted with different contents. development law accumulative permanent strain effects content, deviator stress confining pressure axial explored. study shows that static strength decreases attenuation mainly caused decrease cohesion reduction matric suction. rises linearly stress, pressure. An empirical model for predicting under long-term loading considering was established. Compared test data other existing models, established easier obtained parameters, higher prediction accuracy better applicability.