A distinctive feature of the soil environment in comparison with the building materials is their dispersion, heterogeneity and multi-component (solid particles, liquid, gas). On the stress-strain state of such an environment is significantly influenced by power, physical (temperature, humidity, etc..) And dynamic effects. On sandy soils particularly significant impact vibration effects, which arise as a result of significant additional shear deformation and displacement in time (creep, vibrocreep). Especially strong is the effect manifests itself in water-saturated fine-grained sand, which occurs as a result of loss of the bearing capacity of the base and the transition to solid ground in the fluid state (vibration).
The report presents the results of experimental tests of sandy soils in not saturated and saturated state under triaxial compression at different vibration effects (frequency, amplitude). Show a significant effect of frequency, amplitude and degree of saturation on the dynamic stability. Also provides calculated-theoretical justification of these experimental results on the basis of consideration of the various models of sandy soil.