Investigation of the interaction of a soil massif with bored piles arranged using DDS technology

Abstract

The article compares the indicators of experimental and calculated bearing capacity of bored piles installed using DDS technology, according to static tests and normative calculations. The article also presents results of compression tests of soil samples around the placed piles using the Drilled Displacement System (DDS) method. The authors established dependence of the deformation properties of the soil, such as the modulus of deformation, the angle of internal friction and adhesion, on the diameter of the bored pile. The coefficient of working conditions of the soil of the lateral surface of bored piles installed using DDS technology is obtained based on the results of numerical modeling of bored piles located according to the traditional and proposed DDS method. The article describes the innovative DDS technology, explanations of the operation of the drilling auger during drilling and displacement of soil, and in general, the advantages of the above-mentioned technology and its economic efficiency.