METHOD FOR BORED AND CAST-IN-PLACE PILE FORMING IN GROUND HAVING SILTY INTERLAYERS Russian patent published in 2005 - IPC

FIELD: building, particularly to erect foundations of artificial structures.

SUBSTANCE: method involves drilling hole in ground; arranging casing pipe in the hole; determining the levels of silty interlayer locations; immersing reinforcement case with retained form in hole, wherein retained form is made as geotextile shell and connected to reinforcement case at silty interlayer location zone. Shell has height H, which is equal to sum of at least two reinforcement case diameters and silty interlayer thickness and exceeds above zone ends for at least pile diameter value.

EFFECT: extended range of cast-in-place pile erection methods with the use of removable casing pipes, increased quality and reliability of pile building is silty ground or in ground with silty, namely sapropel, interlayers.

6 cl, 3 dwg