FOUNDATION ERECTION METHOD Russian patent published in 2006 - IPC E02D17/02 

FIELD: construction, particularly to erect civil and industrial buildings and building structures, namely for pile foundation forming in weak ground without ground excavation, wherein the piles are arranged in clusters of in continuous row, for existing building foundation reinforcement, for cast-in-place pile building and for wall in ground construction.

SUBSTANCE: method for foundation erection involves excavating pit having compacted ground walls and made as slot-like cavity and filling the pit with hardening material. Method for pit excavation involves immersing executive tool in ground transversely to day surface; reciprocating the executive tool in plane perpendicular to day surface. The executive tool is one or several rods. The pit is formed by moving above rod along with rod movement plane position displacement by changing force applied to upper rod part direction. Above operation is carried out until the slot-like cavities join each other. After that the pit is enlarged by moving the rod along pit sides. Above rod reciprocation and movement is repeated with increasing rod reciprocation amplitude and force applied thereto to create pit having predetermined shape and to provide necessary mechanical properties of pit sides.

EFFECT: increased load-bearing capacity, reduced labor inputs and costs used to erect foundations of different configurations and depths.

8 cl, 13 dwg