An apparatus for driving a pile section having a central opening into the ground includes a mast attachment with roped hydraulic cylinders, a high frequency hydraulic impact hammer connected with the mast, and a drive cap. The mast with roped hydraulic cylinders provides for vertical movement of the high frequency hydraulic impact hammer, and the drive cap connects with the high frequency hydraulic impact hammer and a pile section to transfer the drive force of the hammer to the pile section. When the mast is connected with an excavator and the drive cap is connected with the high frequency hydraulic impact hammer, a pile section is connected with the drive cap lower end and the high frequency hydraulic impact hammer is operated to drive the pile section into the ground. A system for driving piles into the ground includes an excavator, an apparatus connected with the excavator, and a plurality of base pile sections. The pile sections have an upper end surface containing a central opening which connects with the apparatus prior to driving the pile sections into the ground. The apparatus includes a mast with roped hydraulic cylinders, a high frequency hydraulic impact hammer connected with the mast, and a drive cap. The mast with roped hydraulic cylinders provides for vertical movement of the high frequency hydraulic impact hammer, and the drive cap connects with the high frequency hydraulic impact hammer and a pile section to transfer the drive force of the hammer to the pile section.

The present invention relates to a method for controlling a vibrating pile driver when driving a pile element (4) into a ground (6), wherein the vibrating pile driver includes a vibration unit (2) connected with the same and is attached to a carrier machine (5, 1), the method comprising the following steps: detecting at least one first status parameter of the carrier machine (5, 1) and detecting at least one second status parameter of the vibration unit (2). The method is characterized in that with reference to the at least one first status parameter and the at least one second status parameter a statistical ground model is generated, and individual operating parameters of the carrier machine (5, 1) and the vibration unit (2) are adapted to the statistical ground model, in order to optimize the energy consumption and/or an advance rate when driving in the pile element (4).

The present invention relates to a method for controlling a vibrating pile driver when driving a pile element (4) into a ground (6), wherein the vibrating pile driver includes a vibration unit (2) connected with the same and is attached to a carrier machine (5, 1), the method comprising the following steps: detecting at least one first status parameter of the carrier machine (5, 1) and detecting at least one second status parameter of the vibration unit (2). The method is characterized in that with reference to the at least one first status parameter and the at least one second status parameter a statistical ground model is generated, and individual operating parameters of the carrier machine (5, 1) and the vibration unit (2) are adapted to the statistical ground model, in order to optimize the energy consumption and/or an advance rate when driving in the pile element (4).

A double-acting hydraulic impact hammer includes a drop weight and an inner hydraulic piston. The drop weight is arranged to be driven in an upward and downward direction and the drop weight acts on a pile during its downward motion. The piston has a voided internal area defining a piston volume which is arranged to receive a piston rod and along which the piston extends and retracts axially. The piston volume is in sealed hydraulic communication with the hollow rod volume to form a first volume which changes size as the piston moves along the piston rod whereby the application of hydraulic pressure to the first volume biases the piston towards its extended position. The hammer includes a bore and a collar. The collar forms an outer piston having a working surface which when exposed to hydraulic fluid has sufficient surface area to lift the piston and the drop weight.

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 relates to a fastening tab for a construction element, preferably a beam, a panel or a slab, that is adjustable vertically and relative to the horizontal, that can be screwed to a support with inner thread, preferably a foundation screw, successively comprising: a fastening screw comprising a beveled head and a threaded shank; a metal plate pierced with a beveled opening that can accommodate said fastening screw and comprising fastening means to the construction element; a perforated flexible joint; a screw comprising a machined beveled head with an inner thread corresponding to that of said fastening screw; such that the position of the screw relative to the support, which is obtained by screwing/unscrewing, allows vertical adjustment of the metal plate;
characterized in that the fastening screw, the beveled aperture of the metal plate and the flexible joint cooperate to allow angular adjustment of the metal plate relative to the horizontal plane.

The present invention relates to a fastening tab for a construction element, preferably a beam, a panel or a slab, that is adjustable vertically and relative to the horizontal, that can be screwed to a support with inner thread, preferably a foundation screw, successively comprising: a fastening screw comprising a beveled head and a threaded shank; a metal plate pierced with a beveled opening that can accommodate said fastening screw and comprising fastening means to the construction element; a perforated flexible joint; a screw comprising a machined beveled head with an inner thread corresponding to that of said fastening screw; such that the position of the screw relative to the support, which is obtained by screwing/unscrewing, allows vertical adjustment of the metal plate;
characterized in that the fastening screw, the beveled aperture of the metal plate and the flexible joint cooperate to allow angular adjustment of the metal plate relative to the horizontal plane.