Effect of Vibration on the Shear Strength of Thawed Ground (Vliyanie Vibratsionnykh Vozdeistvii na Soprotivlenie Ottayavshego Grunta Sdvigu),
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
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A railway bed experiences extensive effects from passing trains a variable pulsating load acting on the main area and the vibrations acting on the main area and on the slopes. As is known, pulsating loads on clayey soils lead to fatigue phenomena and to weakening of the clayey soils while the vibration effect leads to the origination of thixotropic occurrences in the soils and to their thixotropic weakening. The softening of soils promotes the development of strains in the main area and slopes of the earth bed. In regions with deep seasonal freezing, these deformations are usually intensified in spring on the thawing of soils. Therefore it is considered that the dynamic effects are especially aggressive in thawing soils.
- Soil Mechanics
- Snow, Ice and Permafrost