DETERMINATION OF SUBSIDENCE PROFILES OF THE RAILWAY AND HIGHWAY EMBANKMENTS FOUNDATIONS, DAMS AND LEVEES MADE OF SOIL MATERIALS

Purpose. Determination of foundations subsidence of railways, roads, and other embankments, as well as dams and levees made of soil materials during their design, construction, and operation, is mandatory. At the same time, if the foundation is composed of soils with a small modulus of general deformation (silt, peat, peaty, and similar soils), then not only the average subsidence and its unevenness should be determined, but also determine the profiles of subsidence outside the structures. This is because the subsidence of the foundation has the same order as the height of the embankment (dams, levees); therefore, when determining the additional volume of material required for the construction of an embankment (dams, levees), these deformations must be considered. The purpose of the article was to develop an algorithm for calculating the subsidence profiles of railways, roads, and other embankments, as well as dams and levees made of soil materials. Methodology. Theoretical studies of geomechanical processes using analytical and numerical mathematical methods. Analysis and generalization of theoretical research results. Findings. An algorithm is proposed that allows using simple analytical dependencies to determine those necessary for calculation and design, construction and operation parameters of the system "soil base of dams (levees) and embankments made of soil materials with a trapezoidal cross-section and a rigid core": – the lower limit of the compressed stratum; – subsidence of the foundation within the sole of the base of the dam, levees, or embankment. Originality. It is established that the foundation subsidence on the vertical passing through the center of the dam, levees, or embankment with a symmetrical profile is not less than the subsidence on the calculated verticals passing through any point of the dam, levees, or embankment with an asymmetric profile. Practical value. The main practical result of the work is a more complete (compared to the current regulatory documents) consideration of the features of subsidence of the system "dam, levees (or embankment) made of soil materials – soil base" with a significant reduction in the number of calculations. The results we obtained allow us to determine those necessary for the calculation, design, construction, and operation of dams, levees and embankments made of soil materials characteristics.