An anchor foundation mechanism includes: a vertical cylindrical tubular body formed to be inserted into the ground and having a receiving space therein; a cover part fixed to the bottom of the body by bolts and configured to be easily inserted into the ground; a support integrally formed with the top of the body and having a plurality of through-holes and an installation fixing bolt flange so as to allow the support to be fixed to a facility post after being exposed on the ground; and an anchor assembly formed in the receiving space of the body and having anchor pins for driving the body deeply into the ground and then tightly fixing the body so as to support a load and prevent rotation, and prevent forced pulling out.

A modular slab, slab system, piles and methods of use thereof are described along with specific applications and methods of manufacture. The slab or slab system may be pre-insulated and pre-finished before being assembled on site. The slab system may be advantageous to use as a replacement for traditional in-situ poured building foundations. The slab system may also have uses in other fields such as for floors, roads, bridges, pavements/side walks and other civil and structural applications.

A ring-shaped cofferdam and temporary pit excavation structure using tapered square pipes includes a plurality of tapered square pipes a trapezoidal cross-section, in which the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in a longitudinal direction on a first side, the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in the longitudinal direction on a second side, the plurality of tapered square pipes are assembled by coupling the coupling protrusions and the coupling grooves, a long side of two parallel sides of the trapezoid is disposed outside, and a short side is disposed inside.

Disclosed is a method of constructing an underwater concrete block structure, including: fabricating a plurality of concrete blocks having a vertical hole extending in the vertical direction; forming a foundation concrete block structure by installing the concrete block on the seafloor; vertically installing at least one guide pole in the foundation concrete block structure; forming a concrete block stack by repeating a process of positioning the concrete block to be installed above the surface of the water; and forming a main concrete column for binding the plurality of concrete blocks.

A foundation for a tower structure, in particular for a tower of a wind power installation, comprising a soil improvement unit with piles and with a slab which is arranged on the piles and which has a foundation side, wherein the foundation side forms a foundation plane, and a shallow foundation which has an areal standing side for mounting onto the foundation plane, wherein the shallow foundation is arranged on the slab.

An off-shore wind turbine system is assembled using a platform or jack-up vessel, and a first base anchored to the seafloor at a bade assembly off-shore location. A buoyant tower is attached to the first base. A crane provided on the platform or jack-up vessel is used to lift blades and blades, which are then coupled to a turbine held in a nacelle provided at the top of the buoyant tower. The buoyant tower, the nacelle, and the blades are detached from the first base. The buoyant tower, the nacelle, and the blades are towed to a wind farm and connected to a second base provided in the wind farm. The buoyant tower, the nacelle, and the blades are further stabilized using mooring lines spanning between the buoyant towers and other bases provided in the wind farm. The first base and/or the second base include anti-rotation features.

An H-pile caisson includes side tabs that can be gripped by side-mounted clamps on a vibratory hammer so that the caisson may be lifted into position from a horizontal position, oriented vertically, and driven into the ground without readjustment of the clamping of the vibratory hammer. A bolted side-extending base plate provides a mounting surface for a pole while allowing a continuous section of the H-pile to be received directly by the vibratory hammer.

Disclosed is a method of constructing an underwater concrete block structure, including: fabricating a plurality of concrete blocks having a vertical hole extending in the vertical direction; forming a foundation concrete block structure by installing the concrete block on the seafloor; vertically installing at least one guide pole in the foundation concrete block structure; forming a concrete block stack by repeating a process of positioning the concrete block to be installed above the surface of the water; and forming a main concrete column for binding the plurality of concrete blocks.

An offshore wind energy system comprising a foundation having a first hollow structural element with a longitudinally extending, circumferential first wall. A cable bushing penetrates through the first wall and is arranged in the first wall. At least one cable guide arrangement extends in a radial direction and is arranged at an outer shell surface of the first wall of the first hollow structural element. The cable guide arrangement is configured to guide a submarine cable exiting the cable bushing from the cable bushing to a submarine bottom surface.

A rotary drive machine for the installation of helical pile sections through installation openings in a slab floor inside of a building perimeter. A vertical frame having an upper end and an open lower end is positioned over an installation opening through which it is desired to rotationally install a helical pile section, and the vertical frame anchored to the slab floor. A rotary power means, attached to the helical pile section moves along a vertical movement guide and is driven by a vertical actuator to rotationally and vertically drive the helical section into the ground. A method of use is also disclosed.