Pile foundation on swelling grounds

Abstract

The invention relates to foundation construction, in particular to pile foundation structures on swelling soils. The invention is aimed at simplifying the design of elastic-compressible movable elements of a pile foundation and increasing their reliability during operation. In a pile foundation in swelling soils, a pile foundation consisting of a grid with upper and lower parts and a layer of elastically compressible material between them, each with an upper shell whose length is less than the depth of the active zone of the soil, each shell is rigidly connected to the lower part of the grid, and the columns of the piles are rigidly connected to the upper part of the grid and whose diameter is greater than the width between the surface of the columns of the piles and the inner surface of the cylindrical shell, consisted of movable elements made in the form of elastically compressible autonomous parts with a circular cross-section. The movable elements were made of rubber cylinders, the length of which was equal to the length of the circle of the pile cross-section, while the number of movable elements was divided into three. In the assembled state, their tores should be located every 120o along the circle of the cross-section of the pile column in the next movable element along the height of the pile.