METHOD OF ARRANGING DRIVEN PILE IN PUNCHED WELL IN WEAK WATER-SATURATED SOILS (VERSIONS) Russian patent published in 2017 - IPC E02D5/44 

FIELD: construction.

SUBSTANCE: method is described for arranging a driven pile by means of forming a well by punching or squeezing, using a shoe-punch and a casing, removing the casing, filling the well with a backfill with the subsequent immersing a driven reinforced concrete pile into the poured material, forming a widened base of hard soil material at the well bottom above the shoe-punch. The well is punched or squeezed by means of a casing with a shoe-punch in its bottom part, which has an open internal cavity in which a shoe-widener is installed after the well formation. The hard soil material is poured into the casing in its bottom part, and then a loose material, or alternately the loose material and the hard soil material, are poured in the casing. The casing is extracted with filling the well to its full height with the material poured into the casing, after which the reinforced concrete pile is immersed into the well with forming the widened base in the bottom part and an additional compacted area around the well.

EFFECT: increasing the reliability, increasing the efficiency of applying pile foundations in punched wells in weak wet and water-saturated soils, reducing the labour intensity of erection.

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