초록 ▼

A method of constructing a column-like marine structure including the steps of constructing and placing an assembly of floats in a dry area, placing on the float assembly a column base having its own buoyancy, flooding the area to float the assembly of floats and column and moving them to deeper wat

A method of constructing a column-like marine structure including the steps of constructing and placing an assembly of floats in a dry area, placing on the float assembly a column base having its own buoyancy, flooding the area to float the assembly of floats and column and moving them to deeper water, ballasting the floats to sink them and while maintaining buoyancy of the column removing the floats, completely ballasting the column to sink it, reconnecting the floats around the top of the column, constructing a further column part on top of the column, lifting the assembly by the buoyancy of the floats and/or the buoyancy of the column and floating it to a desired location in deeper water.

대표청구항 ▼

A method of constructing a column-like marine structure including a column which extends upwardly from a base portion adapted to rest on the water bottom, comprising the steps of: (1) constructing an arrangement of floats; (2) placing the arrangement of floats on a working area which can be flooded;

A method of constructing a column-like marine structure including a column which extends upwardly from a base portion adapted to rest on the water bottom, comprising the steps of: (1) constructing an arrangement of floats; (2) placing the arrangement of floats on a working area which can be flooded; (3) placing upon the arrangement of floats a first column part comprising at least the base portion, which base portion is constructed to have buoyancy; (4) flooding said working area to thereby float the arrangement of floats and said first column part carried thereby; (5) moving the arrangement of floats and said first column part to deeper water; (6) ballasting the floats to sink them while maintaining the buoyancy of said first column part; (7) removing the arrangement of floats from beneath the first column part; (8) ballasting said first column part to thereby sink it to the bottom of the deeper water, which is of a depth such that said first column part extends above the water surface; (9) assembling the floats around and coupling them to said first column part; (10) constructing at least one further column part on the top of said first column part; (11) lifting the column from the water bottom by buoyancy of said floats; and (12) floating the assembly of floats and column to its destination and there ballasting the column to sink it onto the water bottom. Apparatus for use in the manufacture of a column-like marine structure having a base portion adapted to rest on the water bottom at a selected site, a large part of which structure is manufactured in an area remote from the site, floated to the site and there lowered onto the bottom of a body of water, said apparatus comprising: a plurality of floats adapted to be assembled to form an annular arrangement of floats on which the base of said structure may be supported and which surrounds an area which substantially corresponds to the contour of the outer surface of the column portion of the structure to be manufactured, so that they can be assembled around the column of a partly manufactured structure, said floats including guide means adapted to cooperate with the contour of the outer surface of the column to limit relative movement between the arrangement of floats and the column structure to movement in a vertical direction, and coupling means supported on said float assembly and adapted when surrounding the column of a partly manufactured structure to be coupled to the structure for displacing said float assembly and said structure either upwardly or downwardly relative to each other in a vertical direction and for locking the float assembly to the column at an adjusted vertical position.