METHOD FOR ERECTION OF BORED PILES PACKET Russian patent published in 2009 - IPC E02D5/00 

FIELD: construction.

SUBSTANCE: invention is related to construction, in particular to technology for erection of bored piles in soil, and may be used in construction of buildings and structures with underground part, and also in creation of retaining and bearing walls. Packet of bored piles here and further means a certain sequence located in geometric outline specified by project, for instance linear - rectilinear, curvilinear, closed or open outline, from contacting piles that create the structure specified by project. The stated objective is achieved by the fact that in method for creation of bored piles packet by means of secant wells boring for bored piles at the distance between their longitudinal axes, which is less than pile diameter, with their further concreting, at that odd piles are made of concrete, and even ones are reinforced with armature frames, external diameter of which is less then diameter of even well by 10÷15%, - prior to installation of armature frame in well along frame height, on its lower, upper and middle levels on external side on external perimeters of frame belt, evenly on circumference, at least three concrete guides are fixed on every level with embedded fixtures and rounded external facets inverted outside, external diameter of installation of which is less than diameter of even well by 4-6%. At that guides may be additionally fixed by twisting from wire without possibility of their rotation relative to horizontal axis or displacement along frame belt. It is reasonable to install guides in front of longitudinal rods of armature frame. Every guide may be arranged in the form of sphere half or in the form of body extended along rods of longitudinal frame armature, and in this case it is provided with additional embedded fixtures.

EFFECT: creation of a packet of bored piles at increased depth of strictly vertical boring due to provision of resistance to boring even in bottom section, which reduces possible deviation from verticality; reduction of power inputs of boring and increased service life of bore due to minimisation of hardened concrete boring of neighboring bored piles, and also provision of strength balance of building erected from piles as a whole.

5 cl, 3 dwg