Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1988-01-25
1989-09-19
Corbin, David H.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405199, E02B 1702
Patent
active
048676128
ABSTRACT:
Tubular jacket legs of an offshore platform used for petroleum recovery operations are secured to respective internally positioned cylindrical pilings which extend into the sea bed. Each of the jacket legs is mechanically connected to a piling by an arcuate gripping member and a plurality of piston assemblies circumferentially and axially spaced about the jacket leg. Each piston assembly includes a housing fixedly secured to the jacket leg at a preselected angle, a piston slidably movable within the housing, an end cap threadably secured to the housing for maintaining a radially directed force on the piston, and a pivot member at the end of the piston for applying a uniform force from the gripping member to the piling. The substantial force exerted by the piston assemblies structurally interconnects the platform to the pilings, and the annulus between each jacket leg and piling need not be grouted. The pistons may subsequently be retracted outwardly to release the gripping member from the piling and thus disconnect the leg from the piling, thereby resulting in substantial savings in the salvage of the platform.
REFERENCES:
patent: 2944403 (1960-07-01), Smith
patent: 4269543 (1981-05-01), Goldman et al.
patent: 4337010 (1982-06-01), Sullaway et al.
patent: 4479401 (1984-10-01), Korkut
patent: 4497592 (1985-02-01), Lawson
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