A method for installing a pile in a cavity of a soil layer is disclosed. The method includes drilling the cavity in the soil layer using a drilling assembly, applying pressure with the drilling assembly during drilling to an interface portion of the soil layer that is adjacent to the cavity, sensing pressure data of the interface portion during drilling, and transferring the pressure data to a controller during drilling. The method also includes determining pile capacity data of the pile with the controller during drilling based on the pressure data, transferring the pile capacity data during drilling, and controlling the drilling assembly based on the pile capacity data during drilling.

A method for installing a pile in a cavity of a soil layer is disclosed. The method includes drilling the cavity in the soil layer using a drilling assembly, applying pressure with the drilling assembly during drilling to an interface portion of the soil layer that is adjacent to the cavity, sensing pressure data of the interface portion during drilling, and transferring the pressure data to a controller during drilling. The method also includes determining pile capacity data of the pile with the controller during drilling based on the pressure data, transferring the pile capacity data during drilling, and controlling the drilling assembly based on the pile capacity data during drilling.

A method and apparatus place 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 circumference 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 circumference after compaction by the lateral compaction protrusion. The bore is filled with grout while leaving the pile in the soil.

A method and apparatus place 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 circumference 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 circumference after compaction by the lateral compaction protrusion. The bore is filled with grout while leaving the pile in the soil.

A pile includes a first pile section having a first end that engages a supporting medium and an opposing second end. A first end of a second pile section is engageable with the second end of the first pile section, each of the first and second pile sections having mating end fittings that create an in fit. A sleeve overlays the first and second engaged ends of the first and second pile sections. At least one through hole aligned with at least one corresponding through hole of the first pile section is sized for receiving a fastener far securing the sleeve to the first pile section. In another version, the ends of the pile section are engaged in contact while the overlaying sleeve has a pair of interlocking sleeve or coupler portions that are configured to provide torsional resistance. Additional pile sections can be sequentially attached to the second pile section.

A pile includes a first pile section having a first end that engages a supporting medium and an opposing second end. A first end of a second pile section is engageable with the second end of the first pile section, each of the first and second pile sections having mating end fittings that create an in fit. A sleeve overlays the first and second engaged ends of the first and second pile sections. At least one through hole aligned with at least one corresponding through hole of the first pile section is sized for receiving a fastener far securing the sleeve to the first pile section. In another version, the ends of the pile section are engaged in contact while the overlaying sleeve has a pair of interlocking sleeve or coupler portions that are configured to provide torsional resistance. Additional pile sections can be sequentially attached to the second pile section.

The present invention discloses a jetting, expansion and extrusion combined pile, a construction method thereof and a spiral jetting, expansion and extrusion drilling rig used in the method. A pile of the combined pile comprises a pile body (101), an expanded body (103) and a pile end (106). At least one double-frustum-shaped expanded body (103), which is integrally formed with the pile body (101), is arranged on the pile body (101). The expanded body (103) is located in a vertical soil layer position, which has higher deformation modulus and shear strength, of the pile body (101), and at least two wing plates (102) which are uniformly distributed in the circumference direction and basically perpendicular to the axis of the pile are arranged on the pile body (101). The diameter of the pile above the expanded body (103) is larger than or equal to that of the pile below the expanded body (103). The drilling rig in the present invention comprises an upper section and a lower section, the diameter of the upper section is larger than that of the lower section, and the expanded body can be produced in any required position conveniently. When the expanded body (103) is located at the upper part or in the middle of the combined pile, if the diameter of the pile above the expanded body (103) is larger than that of the pile below the expanded body (103), the consumption of concrete can be greatly reduced.

The present invention discloses a jetting, expansion and extrusion combined pile, a construction method thereof and a spiral jetting, expansion and extrusion drilling rig used in the method. A pile of the combined pile comprises a pile body (101), an expanded body (103) and a pile end (106). At least one double-frustum-shaped expanded body (103), which is integrally formed with the pile body (101), is arranged on the pile body (101). The expanded body (103) is located in a vertical soil layer position, which has higher deformation modulus and shear strength, of the pile body (101), and at least two wing plates (102) which are uniformly distributed in the circumference direction and basically perpendicular to the axis of the pile are arranged on the pile body (101). The diameter of the pile above the expanded body (103) is larger than or equal to that of the pile below the expanded body (103). The drilling rig in the present invention comprises an upper section and a lower section, the diameter of the upper section is larger than that of the lower section, and the expanded body can be produced in any required position conveniently. When the expanded body (103) is located at the upper part or in the middle of the combined pile, if the diameter of the pile above the expanded body (103) is larger than that of the pile below the expanded body (103), the consumption of concrete can be greatly reduced.

A combination pier includes: a pile disposed in a bore hole from the bottom of the bore hole to a desired depth; and a pier disposed in the bore hole from the desired depth to the surface. A method for constructing a combination pier includes: forming a pile in a bore hole from the bottom of the bore hole to a desired depth; and forming a pier from the desired depth to the surface.

A combination pier includes: a pile disposed in a bore hole from the bottom of the bore hole to a desired depth; and a pier disposed in the bore hole from the desired depth to the surface. A method for constructing a combination pier includes: forming a pile in a bore hole from the bottom of the bore hole to a desired depth; and forming a pier from the desired depth to the surface.