Method for forming a body of concrete or similar material in the soil

Claim 2

Method of forming a body of concrete or similar material in the soil comprising: making a hole in the soil; lowering into the hole a bag having a shape corresponding to that of the body to be formed and made of a flexible material which is water-permeable but substantially blocks the passage of the solid particles of the (concrete) mortar; filling the bag with the (concrete) mortar; and subjecting the bag to vibrations acting on its radially outer peripheral surface to compact the filling by flow of excess water of the filling radially outwardly through the side wall of the bag.

Claim 3

The method according to claim 1, comprising subjecting the bag to such vibrations initially over its entire length; then progressively reducing, upwardly of the bag, the length thereof subjected to such vibrations.

Claim 4

The method according to claim 2, comprising lowering, into the hole, a tube surrounding the bag; and subjecting the tube to such vibrations while extracting the tube out of the soil leaving the bag in the hole.

Claim 5

Method of forming a body of concrete or similar material in the soil comprising: making a hole in the soil; lowering into said hole a bag having a shape corresponding to that of the body to be formed and made of a flexible material which is water-permeable but substantially blocks the passage of the solid particles of the (concrete) mortar and filling said bag with the (concrete) mortar; subjecting the bag to vibrations either during and/or directly after filling; applying tubular vibrating means surrounding the bag, first making the hole in the soil extracting said means from the soil while subjecting said means to vibrations after the filling of the bag; and keeping the bag tautly tensioned prior to and during the filling by anchoring the bag at its lower end and securing the upper end of the bag to a tensioning element inserted in the upper end of the tube.

Claim 6

Method of forming a body of concrete or similar material in the soil comprising: making a hole in the soil; lowering into said hole a bag having a shape corresponding to that of the body to be formed and made of a flexible material which is water-permeable but substantially blocks the passage of the solid particles of the (concrete) mortar and filling said bag with the (concrete) mortar; subjecting the bag to vibrations either during and/or directly after filling; applying tubular vibrating means surrounding the bag, first making the hole in the soil extracting said means from the soil while subjecting said means to vibrations after the filling of the bag; and keeping the bag tautly tensioned prior to and during the filling by anchoring the bag at its lower end and securing the upper end of the bag to a tensioning element inserted in the upper end of the tube.

Claim 7

The method according to claim 4, which comprises lowering the bag into the tube so far that said bag extends with its lower edge to a distance above the lower end of the tube, which is still completely inserted in the soil, which distance substantially corresponds to the height of an enlarged pile foot, lifting the tube in the first part of its lifting movement with a lower velocity than in the remaining part of the lifting movement, and forming said enlarged pile foot.

Claim 8

Method of forming a body of concrete or similar material in the soil comprising: making a hole in the soil; lowering into said hole a bag having a shape corresponding to that of the body to be formed and made of a flexible material which is water-permeable but substantially blocks the passage of the solid particles of the (concrete) mortar and filling said bag with the (concrete) mortar; subjecting the bag to vibrations either during and/or directly after filling; applying tubular vibrating means surrounding the bag, first making the hole in the soil; extracting said means from the soil while subjecting said means to vibrations after the filling of the bag; lowering the bag into the tube so far that said bag extends with its lower edge to a distance above the lower end of the tube, which is still completely inserted in the soil, which distance substantially corresponds to the height of an enlarged pile fooT; lifting the tube in the first part of its lifting movement with a lower velocity than in the remaining part of the lifting movement; and forming said enlarged pile foot.

Claim 9

Method of forming a body of concrete or similar material in the soil comprising: making a hole in the soil; lowering into said hole a bag having a shape corresponding to that of the body to be formed and made of a flexible material which is water-permeable but substantially blocks the passage of the solid particles of the (concrete) mortar and filling said bag with the (concrete) mortar; subjecting the bag to vibrations either during and/or directly after filling; applying tubular vibrating means surrounding the bag, first making the hole in the soil; extracting said means from the soil while subjecting said means to vibrations after the filling of the bag; lowering the bag into the tube so far that said bag extends with its lower edge to a distance above the lower end of the tube, which is still completely inserted in the soil, which distance substantially corresponds to the height of an enlarged pile fooT; lifting the tube in the first part of its lifting movement with a lower velocity than in the remaining part of the lifting movement; and forming said enlarged pile foot.