A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.

A soil stabilizer assembly may include a pipe with a first end, a second end, and a sidewall defining a hollow shaft extending between the first and second ends; a stabilizer connectable to the second end of the pipe with a hollow body and a plurality of extensions extending radially outward from the body; and a cap connectable to the first end of the pipe including a receiving portion for receiving the first end of the pipe and a plate extending across the receiving portion. The hollow body of the stabilizer may be configured to receive the second end at least a portion of the sidewall of the pipe therethrough. The receiving portion of the cap may be configured to receive the first end and at least a portion of the hollow shaft of the pipe therein. The hollow shaft, hollow body, and receiving portion may be coaxially arranged.

A soil stabilizer assembly may include a pipe with a first end, a second end, and a sidewall defining a hollow shaft extending between the first and second ends; a stabilizer connectable to the second end of the pipe with a hollow body and a plurality of extensions extending radially outward from the body; and a cap connectable to the first end of the pipe including a receiving portion for receiving the first end of the pipe and a plate extending across the receiving portion. The hollow body of the stabilizer may be configured to receive the second end at least a portion of the sidewall of the pipe therethrough. The receiving portion of the cap may be configured to receive the first end and at least a portion of the hollow shaft of the pipe therein. The hollow shaft, hollow body, and receiving portion may be coaxially arranged.

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 and 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.

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 and 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.

A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.

A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.

The present invention provides a wave-shaped grouting bulb (100) for securing an underground bearing capacity of a steel bar (10), the bulb comprising a plurality of protrusions (120), which have a predetermined maximum diameter (D1) and are formed along the longitudinal direction of a cylindrical pillar part (110) extending downward, wherein the neighboring protrusions (120) are formed to be spaced from each other by a predetermined formation distance (s). The present invention has an advantageous effect of improving a skin friction force and resistance to compression and pullout in the grouting bulb integrated with the steel bar and thus enhancing structural stability in the micropile body.

The present invention provides a wave-shaped grouting bulb (100) for securing an underground bearing capacity of a steel bar (10), the bulb comprising a plurality of protrusions (120), which have a predetermined maximum diameter (D1) and are formed along the longitudinal direction of a cylindrical pillar part (110) extending downward, wherein the neighboring protrusions (120) are formed to be spaced from each other by a predetermined formation distance (s). The present invention has an advantageous effect of improving a skin friction force and resistance to compression and pullout in the grouting bulb integrated with the steel bar and thus enhancing structural stability in the micropile body.

Provided is a method for burying a precast pile in which a borehole and a buried precast pile are strongly integrated, the end bearing capacity and the circumferential frictional force of the precast pile are increased, and the extraction resistance strength thereof is improved. Provided is a method for burying a precast pile in which a foaming agent having an expanding effect is added to the cement milk or mortar in advance, whereby the soil cement formed around the base of the precast pile in the borehole is caused to expand.