Auger grouted displacement pile
First Claim
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1. An auger grouted displacement pile comprisingan elongated pipe with a hollow central chamber, the pipe having a top section and a bottom section,the bottom section further including a soil displacement head with:
- at least one lateral compaction plate, the widest of which establishes a bore diameter with a regular diameter, each plate having a diameter that is greater than the pipe diameter;
a helical blade coiled about the lateral compaction plate, the helical blade having a leading edge and a trailing edge, the bottom section further including an opening, proximate to the trailing edge, in fluid communication with the central chamber, the helical blade having a first handedness configured to move material in the direction of the top section;
a deformation structure disposed above the widest lateral compaction plate for cutting into the bore diameter after the material has been compacted by the widest lateral compaction plate, thus forming irregularities in the bore diameter.
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Abstract
Disclosed in this specification is a method and apparatus for placing a helical pile in the soil with minimal disturbances to the soil. The helical pile has an elongated pipe with a central chamber. The pipe has a helical blade with an opening in the trailing edge of the blade where grout is extruded. The grout fills those portions of the soil which were disturbed by the blade. Advantageously, those portions of the soil which were not disturbed by the blade are not infused with grout.
67 Citations
33 Claims
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1. An auger grouted displacement pile comprising
an elongated pipe with a hollow central chamber, the pipe having a top section and a bottom section, the bottom section further including a soil displacement head with: -
at least one lateral compaction plate, the widest of which establishes a bore diameter with a regular diameter, each plate having a diameter that is greater than the pipe diameter; a helical blade coiled about the lateral compaction plate, the helical blade having a leading edge and a trailing edge, the bottom section further including an opening, proximate to the trailing edge, in fluid communication with the central chamber, the helical blade having a first handedness configured to move material in the direction of the top section; a deformation structure disposed above the widest lateral compaction plate for cutting into the bore diameter after the material has been compacted by the widest lateral compaction plate, thus forming irregularities in the bore diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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 a soil displacement head with: -
at least one lateral compaction plate, each plate having a diameter that is greater than the pile diameter, the widest of which establishes a regular bore diameter in the supporting medium; a helical blade coiled about the lateral compaction plate, the helical blade having a first handedness configured to move the pile into the supporting medium; means for forming irregularities in the bore diameter, the means being disposed above the widest lateral compaction plate to cut into the bore diameter after it has been compacted by the lateral compaction plate, thus forming the irregularities in the bore diameter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. 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 a soil displacement head with: -
at least one lateral compaction plate, each plate having a diameter that is greater than the pile diameter, the widest of which establishes a regular bore diameter in the supporting medium; a helical blade coiled about the lateral compaction plate, the helical blade having a first handedness configured to move the pile into the supporting medium; a deformation structure disposed above the widest lateral compaction plate for cutting into the regular bore diameter after it has been compacted by the widest lateral compaction plate, thus forming irregularities in the regular bore diameter.
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Specification