DEVICE FOR BUILDING UNITS DRIVING AND WITHDRAWAL AND METHOD OF CONCRETE WALL CONSTRUCTION INTO SOIL WITH THE USE OF SAID DEVICE Russian patent published in 2004 - IPC

FIELD: construction industry, particularly for foundation building with the use of reinforced concrete piles, cast-in-place piles and injection anchor piles, also for wall building into soil, narrow trench forming, grooved pile or casing pipe insertion and withdrawal, soil compaction or consolidation, building work performing in low water or pile static testing. SUBSTANCE: device has main machine and executive means formed as upper and lover carriages, upper plate having central orifice, intermediate plate also having central orifice, booster jacks and hydraulic jacks with wedge clamp fixed in upper and lower carriages. Upper and lover carriages have identical chambers made in the form of truncated pyramids lager bases of which face each other. Hydraulic jack rods of lower carriage are pivotally connected with main machine panel. Hydraulic jack rods of upper carriage are pivotally connected with upper plate, which in turn is fixedly joined with main machine panel by guiding members and intermediate plate located between guiding members. Guiding members pass through upper and lover carriages. Intermediate plate is pivotally connected to rods of jacks having wedge clamps and connected to both upper and lover carriages. Spring-loaded rods are secured in intermediate plate. Spring-loaded rods pivotally joined with wedging members installed in chambers of both carriages cooperate with carriage sides and with building unit during clamping thereof. Method of concrete wall building into soil with the use of partly intersecting parallel cast-in-place piles involves producing the first cast-in-place piles and the second cast-in-place piles by above device in static driving process. The first cast-in-place piles have square cross-sections and spacing between the first piles is less than cross-section dimensions thereof. The second cast-in-place piles are built by above device in gaps between the first cast-in-place piles in static driving process with cutting, diverting and following compacting of non-solidified concrete of the first piles. EFFECT: simplified structure, increased operational device reliability, extended usability, reduced labor consumption, increased productivity, decreased concrete consumption, improved quality of work. 11 cl, 14 dwg