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Abstract. The application results of foundations in a tamped ditch in complex geotechnical conditions are strongly considered. The article informs about the experience of the effective foundation application instead of pile foundations. Also, a special attention is given to stress-strain analysis in the active zone of the soil basement of the foundation in a tamped ditch. The article exposes innovative technology of transformation the soil materials structure. Presents the results of studies of innovative soil materials state in the field of geotechnics and foundation engineering. This article seems to be interesting for those who work in the field of building construction and geotechnics.

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The article presents the results of numerical modelling of strip sleeper foundations. The analysis of the influence of the distance between the sleepers in the conditions of a two-dimensional problem. As a comparison, the results of the calculation of the analytical corner points method is presented. The results of the study of sleeper foundations with different distances between sleepers up to 3b are shown. The analytical solution shows the distribution of stress over depth when changing the size of sleepers, distances between sleepers. An analytical solution for the distribution of vertical displacements over depth is obtained. The results of the numerical solution show the components of stress and strain at different distances between sleepers, the dependence of precipitation on the applied pressure and the distance between sleepers. These studies are confirmed by the results of experiments of various authors. Designs of sleeper foundations are implemented in the construction of buildings and structures, which reduce the cost of the zero cycle, reduce the material consumption in comparison with standard solutions. The article is of interest to specialists in the field of soil mechanics, geotechnics, and foundation engineering.

The article presents the results of the practical applications of screw piles foundations for block quick-assembly buildings and buildings made of a metal frame. The results of experimental and theoretical studies of foundations in various ground conditions are presented. A method for estimating the stress-strain state of screw pile foundations using nonlinear calculation methods is proposed. The influence of pile length and blade diameter on the change in displacements and load-bearing capacity in cohesive and non-cohesive soils on the effect of pushing and anchor loads is revealed. The nature of the distribution of stresses and deformations at the base of foundations made of screw piles is revealed. The article is useful for engineers, specialists and researchers in the field of soil mechanics, foundation engineering and geotechnics.