PILE Russian patent published in 2019 - IPC E02D5/54 

FIELD: construction.

SUBSTANCE: pile relates to the field of construction, and specifically to the construction of driven piles with widens. Pile consists of a barrel in which transverse recesses are made at different niches. In each niche there is a sliding element with a gap relative to its end face. To extend each element, the pile is equipped with a device made in the form of a helical compression spring installed in the gap. Spring is made from nickel alloy with titanium of nitinol type with effect of thermomechanical shape memory characterized by relay actuation with spring extension at increase of its temperature to preset threshold value. Shaft has an axial blind hole to communicate cavities of all gaps. Each sliding element is equipped with a latch. Springs are electrically connected to each other by means of flexible wires stretched through the hole to the top of the pile with connection of electrical signals to the source.

EFFECT: pile is disclosed.

1 cl, 2 dwg