Tityakova K. Stress-strain state of "subterranean layer of finite thickness- foundation-superstructure"

Purpose:Working out of a technique of joint calculation of the stress-strain state (SSS) system compactor layer of finite thickness - the foundation (or foundation) - superstructure. Considered by saturated and unsaturated basement. It also made allowance for the phenomenon of after-effect of the soil skeleton. Experimentally investigated the VAT system "compactor layer of finite thickness - foundations - superstructure frame construction" on sandy and loamy soil. Scientific novelty: first the clear tendency of dependence of the SSS of frame construction is experimentally exposed from power of the ground layer of finite thickness, which it is erected on, time of action of the external loading, deformation and reologіcal properties of basis; the coefficients and functions influence compliance matrix boundary element method. By using the boundary element method developed an algorithm for calculating the VAT system "subterranean layer of finite thickness - the foundation (or foundation) - superstructure". To account for the properties of subgrade reologіcal invited to use the theory of aging. Proposed two options for method of calculation of VAT system of groundwater layer of finite thickness - the foundation (or foundation) - superstructure, permitting consideration of factors such as the textural features of the structure of soil strata, and its heterogeneity in terms and in depth, the property of the aftereffect of the soil skeleton. The first version of the technique focuses on the calculation of the VAT system in a stable condition, while the second - by the time interval (t) where the - the operation of the building or structure. The results of researches are inculcated in practice of planning with the receipt of the combined economic effect 272 thousands of grn. Concluded that the stress-strain state of a system "of groundwater layer of finite thickness - the foundation (or foundation) - superstructure" depends on the thickness of the soil layer, and this fact must be considered when designing the grounds and buildings.