Apparatus and methods for the installation of pipe pilings into the ground for use as structural building foundations, geothermal piles, or both, are disclosed. In addition to specialized fittings for pipe pile assemblies, the inventions include specialized drive mechanisms used in conjunction with rotary or vibratory motors. Methods of installing pipe pilings are further improved with the disclosure of methods of adding grout or similar materials during or after installation of the piles.

Foundation pile assemblies disclosed herein can include a first section positioned at a bottom of a foundation pile assembly and a second section coupled to the first section. The first section can include a shell extending along a length of the foundation pile. The shell can have an interior space and an outside surface. A cap can be positioned at an end of the pile assembly. Some embodiments of the foundation pile can have an impact support element positioned within the interior space of the shell to increase the strength of the foundation pile assembly in the vicinity of the impact support element. The initial or, in some instances, full length assembly can be configured on a horizontal or slightly sloped rack on the ground from which the assembly is lofted vertically and installed into the ground.

Improved systems, apparatus and methods for construction of slurry walls are provided. A sheet piling barrier is installed into a slurry wall construction to provide improved fluid barrier capability and/or structural integrity. A void creation device allows removal of cementitious material from around the engagement lock element of an installed sheet piling member to prevent interference with engagement of the engagement lock element of a subsequently installed sheet piling member after hardening of the slurry wall.

Improved systems, apparatus and methods for construction of slurry walls are provided. A sheet piling barrier is installed into a slurry wall construction to provide improved fluid barrier capability and/or structural integrity. A void creation device allows removal of cementitious material from around the engagement lock element of an installed sheet piling member to prevent interference with engagement of the engagement lock element of a subsequently installed sheet piling member after hardening of the slurry wall.

Foundation pile assemblies disclosed herein can include a first section positioned at a bottom of a foundation pile assembly and a second section coupled to the first section. The first section can include a shell extending along a length of the foundation pile. The shell can have an interior space and an outside surface. A cap can be positioned at an end of the pile assembly. Some embodiments of the foundation pile can have an impact support element positioned within the interior space of the shell to increase the strength of the foundation pile assembly in the vicinity of the impact support element. The initial or, in some instances, full length assembly can be configured on a horizontal or slightly sloped rack on the ground from which the assembly is lofted vertically and installed into the ground.

Provided are a T-shaped reamed pile, a composite foundation, and a construction method for the composite foundation, relating to the technical field of civil engineering. The composite foundation is composed of a T-shaped reamed pile, soil between piles, and a cushion layer. The T-shaped reamed pile is composed of a core pile, a reamed body surrounding the outside of the core pile. A depth of the core pile is not lower than that of the reamed body, the reamed body includes an upper reamed body, and a lower reamed body, and a diameter of the upper reamed body is larger than that of the lower reamed body. The core pile is a precast pile, the reamed body is a cast-in-place reamed body, and the cushion layer is a sand-gravel cushion layer, or a reinforced cement-soil cushion layer.

Provided are a T-shaped reamed pile, a composite foundation, and a construction method for the composite foundation, relating to the technical field of civil engineering. The composite foundation is composed of a T-shaped reamed pile, soil between piles, and a cushion layer. The T-shaped reamed pile is composed of a core pile, a reamed body surrounding the outside of the core pile. A depth of the core pile is not lower than that of the reamed body, the reamed body includes an upper reamed body, and a lower reamed body, and a diameter of the upper reamed body is larger than that of the lower reamed body. The core pile is a precast pile, the reamed body is a cast-in-place reamed body, and the cushion layer is a sand-gravel cushion layer, or a reinforced cement-soil cushion layer.

An underwater concrete structure for preventing subsidence at seabed soft ground, includes: a main concrete structure installed on an upper part of seabed soft ground on a top of seabed rock, wherein the main concrete structure is spaced apart upward from the seabed rock and has a plurality of vertical penetration holes extending vertically; and a plurality of concrete columns formed continuously along the vertical penetration holes and the seabed soft ground and the seabed rock located under the vertical penetration holes.

An underwater concrete structure for preventing subsidence at seabed soft ground, includes: a main concrete structure installed on an upper part of seabed soft ground on a top of seabed rock, wherein the main concrete structure is spaced apart upward from the seabed rock and has a plurality of vertical penetration holes extending vertically; and a plurality of concrete columns formed continuously along the vertical penetration holes and the seabed soft ground and the seabed rock located under the vertical penetration holes.