THE THEORY OF NONLINEAR ELASTIC-PLASTIC-VISCOUS-RIGID DEFORMATION OF EXTREMELY-STRESSED SOIL IN FEET OF LOADED SINGLE PILES: MECHANICAL MODEL

Abstract

Research was carried out in accordance with the well-known necessity to elaborate a unified theory of nonlinear elastic-plastic-viscous-rigid deformation of extremely stressed granular soil in foundations of loaded single piles. Main provisions of the model of the theory of nonlinear deformation of extremely-stressed soils were determined. Distinctive features of granular media in the role of models of mechanical behavior of silt-loam soils and sandy soils under load were studied. The conducted differential analysis of deformation experimentally studied the base of a stamp; as a result, a methodology was developed: construction of separate calculation graphs of elastic, plastic, viscous and rigid soil deformations; the theory of nonlinear general, elastic, plastic, viscous and rigid soil deformations; reference step coefficients of proportionality of the modules of nonlinear general, elastic, plastic, viscous and rigid soil deformations; approaches to modeling a granular media of silt-loam soils and sandy soils. A scientific justification of the forms of compacted soil plugs at foundations of stamps and in lower ends of single piles under research was presented. A theory of geometric parameters and their correlations with the stress-strain state of soil was developed. Generalized conclusions regarding the essence of the content of provisions of the developed theory were made.