EXTENDABLE SCREW PILE AND METHOD FOR ITS ARRANGEMENT Russian patent published in 2022 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular, to methods for the construction of pile foundations and foundations in weak soils, and can be used in industrial and civil construction, both in the construction of new buildings and structures, and in the reconstruction of existing ones, as well as in cases where it is necessary to create additional load sensing units located indoors that prevent the use of dimensional equipment and devices for construction and installation works, as well as when the height of the premises for the placement of piles of the required length is insufficient. The screw pile of the telescopic type includes a retractable part with a pointed tip equipped with screw blades and a shell pile inserted into each other with the possibility of movement along the length of the pile. The retractable part of the pile is hollow inside, has an expander placed above the screw blade and made in the form of a sleeve worn on a screw pile. At the top, the retractable part of the pile has a seat for connecting the gearbox drive, and the lower end of the pile-shell contains a conductor, which is a guide sleeve for centering the retractable part during placement.

EFFECT: improving the technical characteristics, namely, increasing the depth of placement of screw piles with the formation of a solid reinforced section of the pile along the entire length with an increase in its strength and bearing capacity for the perception of vertical and horizontal loads, as well as increasing the manufacturability when performing work, since it becomes possible to use small-sized equipment without soil extraction.

11 cl, 10 dwg