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 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 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.

The object of the present invention relates to a method for producing drilled piles, wherein a drilling tool is sunk into the subsoil by applying a drilling torque and a vertical force, the drilling tool is then again retracted and an additional material is introduced into the resulting bore. According to the invention, the drilling tool is set in vibration by one or more actuators while it is sunk into the subsoil and/or during the retraction of the drilling tool, wherein a resulting oscillation amplitude has at least one horizontal portion. The invention also relates to a corresponding drilling tool for producing boreholes or drilled piles in a subsoil. The present invention further relates to a depth vibrator for the displacement and consolidation of subsoil material as well as a method for the displacement and consolidation of subsoil material.

The object of the present invention relates to a method for producing drilled piles, wherein a drilling tool is sunk into the subsoil by applying a drilling torque and a vertical force, the drilling tool is then again retracted and an additional material is introduced into the resulting bore. According to the invention, the drilling tool is set in vibration by one or more actuators while it is sunk into the subsoil and/or during the retraction of the drilling tool, wherein a resulting oscillation amplitude has at least one horizontal portion. The invention also relates to a corresponding drilling tool for producing boreholes or drilled piles in a subsoil. The present invention further relates to a depth vibrator for the displacement and consolidation of subsoil material as well as a method for the displacement and consolidation of subsoil material.

A method for optimizing processes for increasing the load-bearing capacity of foundation grounds includes the following steps: detecting at least one part of a built structure and/or of ground; identifying at least one region to be treated of the foundation ground; and injecting, at least one injection point located substantially within the at least one region to be treated, a cement and/or synthetic mixture. The method further includes at least one second step of detecting at least one part of the built structure and/or of the ground that lies above the injected foundation ground. The method further includes a step of interrupting the injection step, and measuring at least one physical parameter that is susceptible of varying as a consequence of the injection step.

A method for optimizing processes for increasing the load-bearing capacity of foundation grounds includes the following steps: detecting at least one part of a built structure and/or of ground; identifying at least one region to be treated of the foundation ground; and injecting, at least one injection point located substantially within the at least one region to be treated, a cement and/or synthetic mixture. The method further includes at least one second step of detecting at least one part of the built structure and/or of the ground that lies above the injected foundation ground. The method further includes a step of interrupting the injection step, and measuring at least one physical parameter that is susceptible of varying as a consequence of the injection step.

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 interlocking 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 for 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 interlocking 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 for 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.

An integrated piling tool with continuous drilling and circulation pouring includes a power connector, a circulation device, a drill assembly, a bottom clearing and a pouring mechanism. The circulation device includes a circulating drill barrel and a spiral piece, and it achieves cuttings removal continuously; the two ends of the circulating drill barrel are connected with the power connector and the drill assembly, respectively. The drill assembly includes a drill body, a connecting sleeve B, transmission parts, a drill tool holder and drilling teeth, and the drill assembly accomplish rock breaking and rotary excavation. The clearing mechanism includes a linkage and clearing blades to remove cuttings at bottom hole. The pouring mechanism includes pouring channels and control parts to achieve continuous concrete pouring. The invention provides a new integrated piling tool with continuous drilling and circulation pouring, which improves the efficiency of piling, circulation and pouring.