Foundation in swelling and sinking grounds

Abstract

The invention relates to foundation construction, in particular to pile foundation structures in swelling and sinking soils. The invention is aimed at simplifying the design of elastically compressible movable elements of a pile foundation and increasing their reliability during operation. In swelling and sinking soils, the foundation consists of a grid with upper and lower parts at different heights and a layer of elastically compressible material between them, piles with an upper shell, each of which 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 have a diameter greater than the width between the surface of the columns of the piles and the inner surface of the cylindrical shell, The movable elements were 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 half the length of the circumference of the cross-sectional surface of the outer shell. However, the number of movable elements at each horizontal level was equal to two, and they were arranged in an X-shaped manner with a displacement in the vertical direction equal to the height of the cross-section of their toruses in the working position. In the assembled state, the location of the moving elements at each successive level, their side end towers are located every 60° along the circumference of the cross-section of the pile column. However, the horizontal levels of location of each pair of moving elements should be divided into three.