Soil Anisotropicity in Modern Methods of Ground Bases Calculating

Abstract

Calculation sequence of soil bases for deformations, taking into account their deformation anisotropy provided in the article. The calculations were performed by the finite element method using the mathematical planning method of the experiment. After determining the deformation anisotropy index of the soil, it was established the possibility to use the numerical experiment results within the tables of the soil anisotropy coefficients of influence, to calculate the soil base sediment and layers of different thicknesses using a currently existing methods, taking into account their deformation anisotropy. It was revealed that the deformation anisotropy nature of the soils’ studied types is different: for plastic sandy loam the indicator was α ≤ 1; for loess like sandy loams and loams, as a rule, α > 1; for sands of medium density and dense, tested under compression was α < 1. Together with an increase in the compressive load, a value increase, and with an increase in a, the foundation sediments’ values increase. Taking into account the soils’ natural anisotropy makes it possible to more reasonably assign the sizes of the foundations soles and determine their settlement, and in some cases to obtain a noticeable economic effect.