AUGER GROUTED DISPLACEMENT PILE

• US 20120087740A1
• Filed: 10/09/2011
• Published: 04/12/2012
• Est. Priority Date: 09/08/2006
• Status: Active Grant

• Current Assignee: Ben Stroyer
• Original Assignee: Ben Stroyer
• Inventors: Stroyer, Ben
• Granted Patent: US 8,926,228 B2
• Time in Patent Office: Days
• US Class Current: 405/241
• CPC Class Codes: E02D 11/00 Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes features relating to placing only E02D7/00, to removing only E02D9/00 ; placing apparatus which without special provisions, can be operated to remove, e.g. vibrating drivers E02D7/00
• CPC Class Codes: E02D 27/12 Pile foundations
• CPC Class Codes: E02D 5/34 Concrete or concrete-like piles cast in position ; Apparatus for making same E02D5/50 takes precedence; moulds E02D5/665; placing, removing moulds E02D7/00 - E02D11/00; placing the concrete E02D15/04
• CPC Class Codes: E02D 5/36 making without use of mouldpipes or other moulds
• CPC Class Codes: E02D 5/52 Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
• CPC Class Codes: E02D 5/56 Screw piles placing piles by screwing down E02D7/22

Abstract

Disclosed in this specification is a method and apparatus for placing an auger grouted displacement pile or helical pile in soil. The pile has an elongated shaft with at least one lateral compaction protrusion which establishes a regular bore diameter in the supporting medium. The pile also has a helical blade configured to move the pile into the supporting medium. The bottom of the shaft includes means for forming irregularities in the bore diameter after compaction by the lateral compaction protrusion. The bore is then filled with grout while leaving the pile in the soil.

Claims

1. An auger grouted displacement pile for being placed in a supporting medium comprising

an elongated pile shaft having a top section and a bottom section,

the bottom section further including:

extending from the pile shaft, at least one lateral compaction protrusion which establishes a regular bore diameter in the supporting medium;

a helical blade having a first handedness configured to move the pile into the supporting medium;

means for forming irregularities in the bore diameter after compaction by the lateral compaction protrusion.

2. The auger grouted displacement pile as recited in claim 1, wherein the top section further includes a helical auger having a second handedness which is opposite the first handedness, the helical auger being configured to move material toward the bottom section.

3. The pile as recited in claim 1, wherein the lateral compaction protrusion is a gusset.

4. The pile as recited in claim 3, wherein the gusset is above a topmost flighting of the helical blade and below a bottommost flighting of the helical auger.

5. The pile as recited in claim 3, wherein the gusset directly contacts the trailing edge of the topmost flighting of the helical blade and directly contacts the bottommost flighting of the helical auger.

6. The pile as recited in claim 3, wherein the means for forming irregularities laterally extends from the gusset.

7. The pile as recited in claim 1, wherein the top section further comprises a first boss coupling flange perpendicular with respect to the longitudinal axis of the pile.

8. The pile as recited in claim 7, further comprising a watertight seal at the first boss coupling flange.

9. The pile as recited in claim 1, wherein the lateral compaction protrusion is elongated and wraps about a portion of the shaft.

10. The pile as recited in claim 9, wherein the lateral compaction protrusion wraps about the shaft by at least forty-five degrees.

11. The pile as recited in claim 1, wherein the means for forming irregularities laterally extends from the lateral compaction protrusion, the means for forming irregularities being elongated and wrapping about the shaft by at least forty-five degrees.

12. The pile as recited in claim 1, wherein the means for forming irregularities extends from the lateral compaction protrusion.

13. The pile as recited in claim 1, wherein the means for forming irregularities is a helix with the first handedness disposed on a topmost flighting of the helical blade.

14. The pile as recited in claim 13, wherein the pitch of the means for forming irregularities differs from that of the helical blade.

15. A method for placing an auger grouted displacement pile in a supporting medium comprising the steps of

placing an auger grouted displacement pile on a supporting medium surface, the pile having:

an elongated pile shaft having a top section and a bottom section,

the bottom section further including;

at least one lateral compaction protrusion which establishes a regular bore diameter in the supporting medium;

a helical blade having a first handedness configured to move the pile into the supporting medium;

means for forming irregularities in the bore diameter after compaction by the lateral compaction protrusion;

rotating the auger grouted displacement pile such that the helical blade pulls the auger grouted displacement pile into the supporting medium while the lateral compaction protrusion compacts the supporting medium;

adding grout to the top section of the auger grouted displacement pile; and

allowing the grout to set while the auger grouted displacement pile is still embedded in the grout.

16. The method as recited in claim 15, wherein the step of rotating the auger and the step of adding the grout are performed simultaneously.

17. The method as recited in claim 16, wherein the top section further includes a helical auger having a second handedness which is opposite the first handedness, wherein the helical auger moves material toward the bottom section during the step of rotating the auger.