A foundation treatment method for piling a foundation structure by penetrating a hardpan layer, i.e., a Deep Slurry Mixing method, comprising following steps: disturbing, by a mechanical device, a location where the foundation structure is to be piled, so that the mechanical device penetrates the hardpan layer of a natural foundation; then injecting clay slurry into the hardpan layer of the natural foundation by a pumping device, an improved foundation is formed after mixing; and piling the foundation structure. The method can change soil property of the original natural foundation, break the hardpan layer, reduce piling resistance of the steel plate cylinder or similar foundation structure, reduce uneven force during the piling process and improve driveability.

A hydraulic impact hammer for striking a pile has a main housing, a ram supported, a coupler rod, a conversion housing, a hydraulic actuator, and a ram connector. The hydraulic actuator defines an actuator rod, a lifting head, and a lift connector. The lifting head defines an upper wall and a lower wall. The lift connector attaches the actuator rod to the upper wall of the lifting head. The ram connector attaches the coupler rod to the lower wall of the lifting head. Operation of the hydraulic actuator raises and lowers the ram to strike the pile.

A hydraulic impact hammer for striking a pile has a main housing, a ram supported, a coupler rod, a conversion housing, a hydraulic actuator, and a ram connector. The hydraulic actuator defines an actuator rod, a lifting head, and a lift connector. The lifting head defines an upper wall and a lower wall. The lift connector attaches the actuator rod to the upper wall of the lifting head. The ram connector attaches the coupler rod to the lower wall of the lifting head. Operation of the hydraulic actuator raises and lowers the ram to strike the pile.

The invention relates to a driving device, in particular a screw foundation driving device, having an anchor with a rotational axis for receiving a driving tool, an outer rotor, which is arranged concentrically to the rotational axis of the anchor and can be rotationally driven by a motor, and an impact device from which an impact energy can be introduced into the anchor. By means of rolling bodies arranged circumferentially on the anchor, the anchor is mounted in the outer rotor in such a way that a relative movement between the anchor and the outer rotor can be executed in the direction of the rotational axis and a torque about the rotational axis can be introduced from the outer rotor to the anchor via the rolling bearings.

The invention relates to a driving device, in particular a screw foundation driving device, having an anchor with a rotational axis for receiving a driving tool, an outer rotor, which is arranged concentrically to the rotational axis of the anchor and can be rotationally driven by a motor, and an impact device from which an impact energy can be introduced into the anchor. By means of rolling bodies arranged circumferentially on the anchor, the anchor is mounted in the outer rotor in such a way that a relative movement between the anchor and the outer rotor can be executed in the direction of the rotational axis and a torque about the rotational axis can be introduced from the outer rotor to the anchor via the rolling bearings.

The subject matter relates to a method and an apparatus for vibrating-in a foundation into a building ground by initiating vibrations generated by means of a vibrating device attached to the foundation, the vibrations causing liquefaction of the building ground so that the foundation penetrates the building ground.

The subject matter relates to a method and an apparatus for vibrating-in a foundation into a building ground by initiating vibrations generated by means of a vibrating device attached to the foundation, the vibrations causing liquefaction of the building ground so that the foundation penetrates the building ground.

A system for simultaneously driving multiple piles into the ground to create A-frame type structures that are anchored by piles running at angles to one another and to the ground. The system comprises a guide assembly and an actuator for driving the piles into supporting ground at the same time. The actuator may engage slots or teeth in the pile to drive them into the ground and/or may apply torque and downward pressure.

A system for simultaneously driving multiple piles into the ground to create A-frame type structures that are anchored by piles running at angles to one another and to the ground. The system comprises a guide assembly and an actuator for driving the piles into supporting ground at the same time. The actuator may engage slots or teeth in the pile to drive them into the ground and/or may apply torque and downward pressure.

A system for simultaneously driving multiple piles into the ground to create A-frame type structures that are anchored by piles running at angles to one other and to the ground. The system comprises a guide assembly and an actuator for moving piles through the guide assembly and the actuator (such as a meshing gear, ratchet or rollers) that engages a slots or teeth in the side portion of the pile to drive the piles into the ground.