A FOUNDATION PILE, A GROUTING METHOD FOR THE SAID PILE AND A MANUFACTURING METHOD THEREFOR

Abstract

A foundation pile comprising a longitudinal through hole (1) and a plurality of crosswise through holes (2) transverse to longitudinal through hole (1) extending between longitudinal through hole (1) and the outer surface of the pile and optionally further comprising check valves positioned in the crosswise through holes (2), configured such that the crosswise through holes (2) and the check valves allow one-way communication from the inside of the pile to the outside of the pile from longitudinal through hole (1) to the outer side surfaces of the pile.

Claims

1. A foundation pile comprising a longitudinal through hole, characterized in that it comprises a plurality of crosswise through holes transverse to the longitudinal through hole extending between the longitudinal through hole and the outer surface of the pile.

2. A foundation pile according to claim 1, characterized in that the crosswise through holes comprise check valves configured such that the crosswise through holes and the check valves allow one-way communication from the inside of the pile to the outside of the pile from the longitudinal through hole to the outer side surfaces of the pile.

3. A foundation pile according to claim 1, characterized in that a cross-section of the pile comprises two crosswise through holes arranged so as to extend in opposing directions.

4. A foundation pile according to claim 3, characterized in that a cross-section of the pile comprises four crosswise through holes arranged so that each pair extends in opposing directions two by two.

5. A foundation pile according to claim 1, characterized in that it is divided longitudinally into sections that can be coupled together.

6. A method of grouting a foundation pile, characterized in that a grouting material is injected through a longitudinal through hole in the pile and the grouting material subsequently expands through a plurality of crosswise through holes transverse to longitudinal through hole extending between the longitudinal through hole and the outer surface of the pile, such that the grouting material spreads from the shaft of the pile through the crosswise through holes.

7. A method of manufacturing a foundation pile, characterized in that it comprises the following steps: Placing a lengthwise tube in position, Placing a plurality of crosswise tubes in position transverse to longitudinal tube, whereby the longitudinal tube and the crosswise tubes are in communication, and Casting concrete around the longitudinal tube and the plurality of crosswise tubes such that the crosswise tubes extend through to the outer surface of the concrete.

8. A method of manufacturing a foundation pile according to claim 7, characterized in that check valves are included in the crosswise tubes before the concrete casting step.

Description

DESCRIPTION OF THE DRAWINGS

[0016] Drawings are provided for a better understanding of the invention and to complement the description. Said drawings are an integral part of the description and illustrates an exemplary embodiment of the invention.

[0017] FIG. 1 is a perspective view of a pile manufactured according to an embodiment of the invention.

[0018] FIG. 2 is a longitudinal section of the pile according to the embodiment shown in FIG. 1.

[0019] FIG. 3 is a detailed view of a cross-section of the embodiment of the pile according to FIGS. 1 and 2 on grouting the pile shaft using one of the different grout injection systems [sleeve grouting (IU), unitary and global grouting (IGU), repetitive grouting (IR), and repetitive and selective grouting (IRS)].

[0020] FIG. 4 is a view similar to that in FIG. 3 but of a longitudinal section of the pile.

DETAILED DESCRIPTION OF THE INVENTION

[0021] The figures illustrate an embodiment of the invention consisting of a pile divided into longitudinal sections that can be coupled together. The pile comprises a longitudinal through hole (1) and a plurality of crosswise through holes (2) transverse to the longitudinal hole (1) extending between the longitudinal through hole (1) and the outer surface of the pile. Crosswise through holes (2) further comprise check valves configured such that through holes (2) and the check valves permit one-way communication from the inside of the pile to the outside of the pile from longitudinal through hole (1) outwards to the outer side surfaces of the pile.

[0022] More specifically, to achieve uniform distribution of the grout (3) and to offset the reaction forces on injecting the grout within a cross-section of the pile, the pile comprises individual crosswise through holes (20, 21) arranged so that they oppose each other. To further improve the said enhanced distribution of the grout (3), the embodiment shown in the figures comprises four holes (20, 21, 22, 23), in two pairs of opposing holes.

[0023] This is clearly depicted in FIG. 4, which represents an embodiment of insertion of the grout (3) during injection through the shaft of the pile, such that the grout (3) fills the shaft, thereby enhancing its load-bearing capacity.