A wall sinking construction method comprises retaining structures are first formed on two sides, corresponding to a groove body, of the wall body; then a section of wall body of a certain height is produced on the ground, and jacks and a supporting pile body are installed on the two sides of the bottom of the wall body that is supported by the jacks and the supporting pile body, the bottom of the wall body is suspended to form an excavation working space with a certain height; an underwater excavator is controlled remotely to excavate rock and soil in the groove body layer by layer; an elastic support having rollers is sandwiched between the retaining structures on the two sides of the wall body and the groove body to transfer and balance rock and soil pressure.

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.

According to the present invention, an assembly for guiding water flow comprising a plurality of water shielding plates, wherein each of the water shielding plate has a recessed portion formed on one side thereof, a protruded portion formed on an opposite side thereof, a first fastening hole running through the recessed portion, and a second fastening hole running through the protruded portion, wherein the second fastening hole has an elongated cross section, wherein the protruded portion of one water shielding plate is at least partially accommodated in the recessed portion of an adjacent water shielding plate when the water shielding plates are fixed to a ground by a fastening rod inserted into the first and the second fastening holes, and wherein, during or after fixing of the water shielding plates to the ground, the water shielding plates can be spaced apart or rotated in a transverse direction due to the elongated cross section so that a lower end of each water shielding plate can be adjusted to fit to the ground is provided.

The present disclosure relates to a stabbing system for installing an offshore jacket structure and an installation method for installing an offshore jacket structure using the same. Particularly, the stabbing system fixes, to a seabed-pile, a jacket leg of a jacket structure to be inserted into the seabed-pile that was pre-inserted into the seabed and includes: a stabbing member that is installed on an external surface of the jacket leg and supported by an upper end surface of the seabed-pile when the jacket leg has been inserted into the seabed-pile; a vertical gripper that is installed in plural number in the stabbing member and operated toward an upper end surface of the seabed-pile to adjust a horizontality degree of the jacket leg; a horizontal gripper that is installed in plural number in the outer periphery of the stabbing member and operated toward an external surface of the seabed-pile to fix the jacket leg to the seabed-pile; and a grouting unit that introduces grout into a space between the jacket leg and the seabed-pile, in a state that the jacket leg has been fixed inside the seabed-pile.

An idea to use prefabricated modular space unit (FIG. 1) that can be used singularly or combined in plurality (FIG. 2) to form mega floating or underwater architectural buildings & civil structures and support systems for human civilisation. This patent discloses a nova idea to define a standard building system and disclosure of an invention (1) and methodology (2) claims herein to support the nova idea to define a building standard system term as “Modular Space Unit” aka. “The invention” for building in the ocean, sea & water bodies for human civilizations. (3)

The present disclosure relates to an offshore substructure supported by a template-integrated suction foundation and an installation method thereof, more particularly to an offshore substructure installed by pre-piling construction including: a suction foundation having a plurality of suction piles pre-inserted into the seabed by suction, joint sockets connected to each head part of the suction piles, and connecting members connecting spaces between the joint sockets; and a substructure connected onto an upper part of a suction foundation pre-piled, wherein an insertion socket connected to a lower part of the substructure is inserted into the joint socket, and the suction foundation and the substructure are connected by grouting a space between the insertion socket and the joint socket.

A wall sinking construction method comprises retaining structures are first formed on two sides, corresponding to a groove body, of the wall body; then a section of wall body of a certain height is produced on the ground, and jacks and a supporting pile body are installed on the two sides of the bottom of the wall body that is supported by the jacks and the supporting pile body, the bottom of the wall body is suspended to form an excavation working space with a certain height; an underwater excavator is controlled remotely to excavate rock and soil in the groove body layer by layer; an elastic support having rollers is sandwiched between the retaining structures on the two sides of the wall body and the groove body to transfer and balance rock and soil pressure.

The disclosure is related to a method for forming structures in a liquid, preferably underwater using a flowing, settable material, wherein the material used has a density which is substantially equal to the density of the liquid in which the structure is formed as well as a system for such method and structures formed.

An assembly for installing an object under water at a desired location, including a vessel arranged to carry the object; a submersible frame; and a connection between the object and the submersible frame. In use the vessel is spatially separated from the submersible frame along the direction of the water surface. The object, the connection and the submersible frame are arranged such that, when releasing the object from the vessel, the object becomes submerged and carries out a pendulum motion until the object is suspended from the submersible frame.

A modular HVDC platform and a method for constructing the same are disclosed herein. The modular HVDC platform has a topside disposed on a structural jacket. The topside includes a first rectifier module, a second rectifier module, and a utility module. The first and second rectifier modules have equipment for converting AC power to DC power disposed therein. The utility module contains equipment for supporting the operations of the rectifier modules. Each of the rectifier modules and the utility modules can be fabricated and commissioned onshore prior to installation on the structural jacket at an offshore location.