METHOD FOR FORMATION IN SOIL OF DRILLING-INJECTION ANCHOR PILE WITH REINFORCED CONTROLLED BROADENING Russian patent published in 2019 - IPC E02D5/44 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to the technology of drilling-in-place anchor piles, ground anchors intended for attachment of landslide slopes, caissons, retaining walls, masts, towers, posts and other critical objects. Method for formation of drilling-injecting anchor pile with reinforced controlled broadening in soil includes drilling of well, immersion of reinforcement frame in form of injection pipe with membrane-barrel on its end, device of concrete plug in upper part of pile, solution injection till complete reduction of well walls along whole length of annular space. Controlled broadening is reinforced by spring-rod mechanism located at the end of the tube-injector inside the membrane-barrel, made of metal rod, in pairs pivotally connected to each other, brought into a vertical position by means of a stretched spring, to which a sliding ring is attached from above, which moves down along the injector tube at the moment of solution injection and opens the spring-rod mechanism, which reinforces controlled broadening and stretches the membrane-cartridge in the specified direction.

EFFECT: technical result consists in development of effective and reliable structure of broadening reinforcement at the end of anchor pile.

1 cl, 3 dwg