摘要:
A method of connecting a lower pipe portion to a subsea foundation is provided. The method comprises: providing the subsea foundation, wherein the subsea foundation comprises an upper pipe portion connected to the subsea foundation, deploying the subsea foundation subsea; and connecting the lower pipe portion to the upper pipe portion. A subsea foundation system is also provided. The subsea foundation system comprises: a subsea foundation; an upper pipe portion connected to the subsea foundation, and a lower pipe portion, wherein the subsea foundation system is arranged such that subsea the lower pipe portion can be connected to the upper pipe portion. The lower pipe portion may be connected to the subsea foundation in a stowed position before deployment subsea. The lower pipe portion may be connected to a pull-in arrangement before deployment subsea. The subsea foundation may comprise a pipe overlap section that is arranged to overlap a portion of the upper pipe portion and/or the lower pipe portion when the lower pipe portion is connected to the upper pipe portion.
摘要:
The invention relates to a method for erecting a underground construction, in which a shaft (30) is sunk at the erection site, and the shaft is closed off by a cover (32) in which an opening is provided. Furthermore, a lifting/lowering device (37, 38) is provided in the area of the opening, a locking mechanism (57) is provided in the shaft (30) below the opening, a segment of the construction (46) is provided in the area of the opening and is connected to the lifting/lowering device (37, 38) and is lowered through the opening, down to the locking mechanism (57), and is locked, and is then released from the lifting/lowering device (37, 38) after being locked, a process cycle is performed in which a further segment of the construction (40) is connected to the locked segment of the construction (46), the construction segments located in the shaft are lowered, and said process cycle is repeated until the segments required for erecting the underground construction have been inserted into the shaft.
摘要:
A method for the offshore installation of a construction laid by gravity on the seabed, comprising: the provision of a concrete base (1) delimited by a lower slab (8), a roof (2) and a perimeter wall (5), the interior whereof comprises vertical walls (6, 6') forming cells (7, 12, 22); connecting at the periphery of the roof (2) a plurality of hollow metal floats (3) formed by a column with a circular or polygonal base; towing the assembly to the offshore location where the construction is to operate; allowing seawater to enter the cells (12) located below the roof (2), maintaining the cells (22) located below the metal floats (3) empty, in such a way that when the cells (12) located below the roof (2) are totally full, both the base and the metal floats (3) are submerged; once the cells located below the roof (2), but not those located below the metal floats (3) are full of water, allowing water to enter the cells (22) located below the metal floats (3) in such a way that the immersion of the assembly is completed, the base thereof resting on the seabed; and removing the metal floats. A gravity-based structure comprising a concrete base (1) and a plurality of hollow metal floats (3) connectable thereto.
摘要:
The present invention relates to a caisson block construction method and a caisson block structure constructed using the method, and the caisson block construction method forms a durable structure by disposing a plurality of caisson blocks offset from each other and coupling the plurality of caisson blocks by filling with rubble and a vertical concrete column for joining.