Experimental research on dynamic rehelogical characteristics of marine deposit soft soil under different frequencies of dynamic loading

The rheological action of the soft rock-soil could be accelerated by the dynamic loading, which induces more geotechnical engineering accidents and geologic disasters. The samples of marine deposit soft soil are collected in Xiamen, and the dynamic rheological characteristics of dynamic stress-strain, rheological strain-time and rheological displacement are tested under the different frequencies of dynamic loading of sinusoidal variation using dynamic-triaxial device and remodeled samples. The influence on rheological characteristics of marine deposit soft soil is analyzed under different frequencies of dynamic loading. The experimental analysis indicates that when the frequency of dynamic loading is low, the rheological dynamic characteristics sensitivity of marine deposit soft soil is obvious, and the rheological distortion is quick. But when the frequency of dynamic loading is high, the rheologic dynamic characteristics sensitivity of marine deposit soft soil is not obvious, and the rheologic distortion is slow. The research results have theoretical and actual significance for us to open out the dynamic rheological characteristics and the rheologic dynamic mechanism of bursting out geologic disaster under dynamic loading with different frequencies.