METHOD TO ARRANGE REINFORCEMENT-CONVERTING CONCRETE-CAST BORED CAST-IN-PLACE PILES IN WEAK WATERLOGGED SOILS Russian patent published in 2014 - IPC E02D5/34 

FIELD: construction.

SUBSTANCE: invention relates to foundation building and may be used to increase bearing capacity of weak waterlogged soils of natural or manmade composition by formation of reinforcement-converting arrays from reinforcement-converting concrete-cast bored cast-in-place piles in the base of foundations with the specified values of bearing capacity. The method to arrange reinforcement-converting concrete cast bored cast-in-place piles in weak waterlogged soils includes making a cylindrical wall by means of reciprocal submersion of a roller for the specified depth with displacement of the soil into space near wells with the help of a roller and formation of a compacted zone at the same time in the near-well space of the well, filling of the cylindrical well with the concrete mix. The body of the reinforcement-converting concrete-cast bored cast-in-place pile is made by submersion of a solid metal roller made of conical and cylindrical segments and equipped with a longitudinal concrete-cast channel and a tip with concrete cast holes, to the design depth, by means of its rotation clockwise and the applied vertical force of feeding down. Then the body of the reinforcement-converting concrete-cast bored cast-in-place pile is formed with the diameter equal to diameter of the cylindrical segment of the solid metal roller in the bottom-up direction (from the bottomhole of the conventional well to the head) by rotation of the solid metal roller counterclockwise, its slow raising upwards with the specified rated speed and simultaneous feed of the concrete mix under pressure of 4-7 atm. via the opened hole in the tip - into soil. The length of the body of the cylindrical reinforcement-converting concrete-cast bored cast-in-place pile formed by slow displacement of the body of the solid metal roller with a concrete mix is determined on the basis of the given dependence. The concrete mix is used of class B7.5 on the coarse filler of fraction 2-5 mm or 5-10 mm, besides, when the fraction of the coarse filler of 5-10 mm is used, the content of particles in it with size of 10 mm shall not exceed 30%.

EFFECT: higher bearing capacity.

2 cl, 2 dwg