Abstract
The article deals with the vibration of the subgrade soil and for the sections of the sloping terrain of the location of the subgrade calculation methods. In the calculations, we use the finite element method, the advantages of which are the simplicity of obtaining systems of resolving equations and the possibility of thickening the grid of elements and taking into account the inhomogeneous deformation and density properties of the soil material. The stress-strain state caused by structural changes in the subgrade during high-speed train traffic is determined. It also determines the dependence of the increase in the stress in the embankment of the subgrade on its height during high-speed train traffic, the dependence of the stress in the embankment of the subgrade on its width during high-speed train traffic, and the dependence of the stress in the slopes of the notch its depth.
Highlights
Measurements of ground vibrations of the subgrade carried out by G
The upper structure of the tracks is based on a subgrade, which is represented in the form of flat rectangular elements with eight nodes
The boundary conditions for the elements concerning the height of the embankment varied according to a linear law and are described by the generalized Hooke's law: σσ = (Д εε )kk, (3)
Summary
Measurements of ground vibrations of the subgrade carried out by G. Deformations of embankments of the subgrade are manifested in two schemes: with the appearance of cracks on the roadside, the axis of the path, or along the intertrack of the embankment, followed by the erosion and landslide of its slopes. These damages to the embankment can be detected in a timely manner, and measures can be taken. According to another scheme, the slopes of the embankments of a sudden while following by train.
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