Frequency-dependent degradation of cohesion and deformation behavior in moist loess soils

This article presents the results of laboratory experiments investigating the influence of dynamic vibration frequency on changes in the cohesion and deformation of moistened loess soil. It is known that as the intensity of oscillations increases, the strength characteristics of moistened loess and other weakly cohesive soils decrease. This is primarily due to a reduction in cohesion, which in turn leads to an increase in soil deformation. It should also be noted that the vibration frequency plays the most significant role in structural degradation, cohesion reduction, and increased soil deformation. Analysis of the consequences of many destructive earthquakes shows that high-frequency earthquakes are the most dangerous for moistened loess and other weakly cohesive soils in terms of disrupting their dynamic stability.