the stress relaxation characteristics and vibration settlement of compacted loess are studied. The tests give the variation amplitude of stress relaxation according to humidity content
confining pressure
frequency and initial strain. The time of vibration settlement is very short. Vibration settlement decreases with the increasing of confining pressure and frequency
but increases with increase of humidity content. The conclusion has important theoretical significance to projects. Finally
a dynamic rheological test model is put forward based on the tests and theoretical derivation.