Soil displacement piles
First Claim
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1. A soil displacement assembly forming a portion of a pile that is intended to be driven into soil and remain in the soil to support a structural load, the soil displacement assembly comprising:
- an upper helical plate having a central opening defining an inner edge portion, and an outer edge portion;
a lower helical plate having a central opening defining an inner edge portion, and an outer edge portion, the lower helical plate being independent of the upper helical plate and spaced a predefined distance from the upper helical plate along a longitudinal axis of the soil displacement assembly such that the upper and lower helical plates do not overlap; and
at least one curved soil displacement plate having a first edge portion attached to the upper helical plate and a second edge portion attached to the lower helical plate such that a convex surface of the at least one curved soil displacement plate forming a soil contacting surface extends from the inner edge portions of the upper helical plate and the lower helical plate to the outer edge portions of the upper helical plate and the lower helical plate, and is oriented to contact soil when the soil displacement assembly is driven into the soil to displace the soil from the inner edge portions of the upper helical plate and the lower helical plate toward the outer edge portions of the upper helical plate and the lower helical plate so as to create a cavity in the soil.
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Abstract
Soil displacement piles having a shaft and one or more soil displacement assemblies secured to the shaft are provided. If more than one soil displacement assembly is utilized, each soil displacement assembly is separated by a longitudinal distance. Each soil displacement assembly has an upper helical plate, a lower helical plate separated from the upper helical plate by a longitudinal plate distance, and at least one soil displacement plate positioned relative to the shaft, the upper helical plate and the lower helical plate.
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Citations
16 Claims
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1. A soil displacement assembly forming a portion of a pile that is intended to be driven into soil and remain in the soil to support a structural load, the soil displacement assembly comprising:
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an upper helical plate having a central opening defining an inner edge portion, and an outer edge portion; a lower helical plate having a central opening defining an inner edge portion, and an outer edge portion, the lower helical plate being independent of the upper helical plate and spaced a predefined distance from the upper helical plate along a longitudinal axis of the soil displacement assembly such that the upper and lower helical plates do not overlap; and at least one curved soil displacement plate having a first edge portion attached to the upper helical plate and a second edge portion attached to the lower helical plate such that a convex surface of the at least one curved soil displacement plate forming a soil contacting surface extends from the inner edge portions of the upper helical plate and the lower helical plate to the outer edge portions of the upper helical plate and the lower helical plate, and is oriented to contact soil when the soil displacement assembly is driven into the soil to displace the soil from the inner edge portions of the upper helical plate and the lower helical plate toward the outer edge portions of the upper helical plate and the lower helical plate so as to create a cavity in the soil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A soil displacement pile comprising:
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a shaft intended to be driven into soil and to remain in the soil; and at least one soil displacement assembly including; an upper helical plate secured to the shaft; a lower helical plate secured to the shaft, the lower helical plate being independent of the upper helical plate and separated from the upper helical plate along a longitudinal axis of the shaft such that the upper and lower helical plates do not overlap; and at least one curved soil displacement plate having a top edge attached to the upper helical plate, a bottom edge attached to the lower helical plate, and a side edge attached to the shaft such that a convex surface of the at least one curved soil displacement plate forming a soil contacting surface extends from the shaft to an outer edge portion of the upper helical plate and an outer edge portion of the lower helical plate and is oriented to contact soil when the soil displacement assembly is driven into the soil so as to displace the soil from an inner edge portion of the upper helical plate and an inner edge portion of the lower helical plate toward the outer edge portions of the upper helical plate and the lower helical plate to create a cavity in the soil surrounding the shaft. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification