摘要:
The present invention relates to a gravity-based foundation system for offshore wind turbine installation which enables the transport, anchoring and subsequent refloating of the structure-wind turbine assembly once anchored, giving great versatility to the solution with regard to the uncertainties associated with the installation and terrain response in the short and long term, as well as the method for installing the preceding gravity-based foundation system.
摘要:
Artificial islands, embankments, piers, breakwaters, platforms, or similar structures, to be installed in bodies of water, such as rivers, lakes, seas, marshes, etc. comprising at least one pillar ( 10 ) realized by assembling a floating basement ( 11 ) with a set of structural elements ( 12 ) having same shape and dimensions. The basement ( 11 ) is a hollow part made of a bottom ( 15 ), and side walls ( 14 ) which delimitate an internal hollow space that can be reached from the outside through an aperture ( 18 ). The basement ( 11 ) is placed in an installation site ( 40 ) through, for instance, a crane. Then, on the bottom ( 15 ) of the basement ( 11 ) is laid down a certain quantity of a filling material ( 35 ) until the basement is partly under water. On the basement ( 11 ) are then positioned structural elements ( 12 ), one on top of the following. These are provided with side walls ( 14 ) having same shape and dimensions of the basement's side walls, and they are firmly fixed to one another in order to provide sealing and to avoid seepage of water inside the pillar ( 10 ) under construction. The above procedure is carried out until the basement ( 11 ) gets the bed ( 30 ) of the body of water. From the top of the last structural element ( 12 ) of the pillar ( 10 ), or head structural element, is inserted the filling material up to realize a firm flat surface ( 50 ) apt to be a base for any kind of building.
摘要:
An improved harbor, which comprises at least one lower level (3) and at least one upper level (2) for loading and unloading goods in a harbor area, the levels being arranged one above the other and so that at least the lower level lies below sea level.
摘要:
A method and apparatus for installing marine silos to a desired depth into the seabed such that the interior of the silos is void of seabed material to a desired depth. A submergable silo positioning template operatively supports a silo and excavation modules during surface transportation to the intended site and is capable while floating and submerged of raising and lowering the silo relative to the template and maintaining vertical alignment of the silo. The submergable excavating module incorporates apparatus for loosening and removing sea bed material within the silo thus permitting the silo and excavating module to desend to a desired depth in the seabed. The template and the excavating module are separated from the silo after silo installation and are reused for other silo installations. During silo installation the influence of hydrostatically stimulated force may be employed to assist forcible insertion of the silo into the soil of the seabed.
摘要:
Method for the construction and anchorage of a building structure or the like, preferably a launched and floating building (11 or several building sections, to a foundation. On the construction site there is prepared a foundation whose crown or head portion is located below the draught of the floating building structure (1). The structure (1) is supported against the foundation by means of pillars or legs such that at least the substantial portion of the loads is transmitted by the pillars to the foundation. The foundation is surrounded with a sheet pile wall with an opening through which the building structure is floated in over the foundation, and the opening is closed once the structure has been moved in over the foundation. The building structure is supported against the foundation and the water inside the pile sheet wall is thereafter evacuated.
摘要:
A subsea foundation comprises a caisson (16) that is at least predominantly of steel and is preferably made mainly of flat steel plates, using conventional shipyard fabrication techniques. The caisson is lightweight, hence being transportable aboard an installation vessel rather than requiring towing, and can be lifted onto and off the vessel by a marine crane. The caisson has a base and a peripheral wall (42) upstanding from the base (40) to define at least one open-topped compartment (52) in which ballast (50) can be deposited onto the base after the caisson is lowered to the seabed. A column (20) like a monopile for a wind turbine is co-operable with or fixed to the caisson (16). The column may be lowered with the caisson or lowered after the caisson and united with the caisson on the seabed. For the latter purpose, the caisson may comprise a tubular socket that receives the column telescopically.