| 摘要 |
Process for installing an offshore tower, comprising: a) manufacturing a foundation comprising a block (1, 1′), manufacturing at least one superposition section of a shaft (7), and manufacturing a base section (25) of a shaft; b) applying said base section to said foundation block (starting unit) to assume the relative position for the installed condition, applying said superposition sections to said starting unit in a multi-layered configuration, and applying lifting means to said foundation block and/or said base section; c) moving said starting unit up to the installation point; d) introducing ballast in said foundation block so that said starting unit sinks until resting on the bottom of the body of water; e) actuating said lifting means to expand said sections into the installed condition; f) between step a) and c), placing said foundation block or starting unit in the body of water of the installation point. |
| 主权项 |
1. Process for installing an offshore tower, particularly a substructure which includes a tower shaft basically made from (optionally reinforced) concrete, metal or a concrete/metal combination, of the semi-submerged type in installed condition, and a corresponding tower foundation made from concrete, characterised in that:
said shaft is semi-submerged in installed conditions and said foundation is submerged in installed condition; said process comprises the following steps, in chronological order: a) dry manufacturing a foundation comprising a block basically made from concrete, said foundation block being essentially hollow and watertight and having first ballast valve means for opening a passage to the interior of said foundation block, dry manufacturing at least one superposition section of a shaft, and dry manufacturing a base section of a shaft; b) applying, mechanically or integrally, said base section to said foundation block in such a manner that said base section and said foundation block assume the relative position envisaged for the installed condition, said base section and said foundation block forming a starting unit, applying said superposition sections to said starting unit so that said base section and said superposition sections are in a multi-layered configuration, and applying external lifting means for mounting towers and/or self-lifting means to said foundation block and/or said base section; c) moving said starting unit, in a self-floating manner, through the body of water wherein the installation point of said substructure is located, up to the installation point of said substructure; d) actuating, in a controlled manner, said first ballast valve means of said foundation block so as to open a passage to the interior of said foundation block and introduce ballast in said foundation block through said passage in such a manner that said starting unit sinks until resting on the bottom of the body of water; and e) actuating said external lifting means for mounting towers and/or said self-lifting means in order to expand said sections into the installed condition of the resulting shaft; said process also comprises after step a) and before step c), the following step: f) placing said foundation block or starting unit in the body of water wherein the installation point of said substructure is located. |
