US 4,290,716 A · Platform resting on the bottom of a body of water, and method of manufacturing the same

Abstract

A platform resting at the bottom of a body of water, including a plurality of longitudinally disposed bays supported by piers each consisting of a small number of transversely aligned posts resting on a common base and each supporting a cross-beam, each bay comprising a framework of longitudinal beams which rest at either end on the cross-beams, and a method of constructing the platform comprising the steps of preparing each pier onshore, transporting it to the installation site and setting it down on the bottom, raising the base at several points and adjusting their heights above the bottom in order to position the base horizontally, securing the base in that position by pouring concrete beneath it, preparing each bay on the shore, transporting it to the installation site and setting it down on two adjacent piers.

Claims5

Dependent claims

An offshore platform of the "gravity" type being designed for lying by virtue of its own weight on the bottom of a body of water and being composed basically of an underframe structure resting on the bottom of the body of water and supporting a bridge structure above the surface of the body of water, wherein:

said underframe structure comprises a plurality of longitudinally-spaced and transversely-extending piers, each of the plurality of piers including a pluraity of transversely-spaced upright posts in mutual transverse alignment, a common transverse base resting on the bottom of the body of water and carrying lower ends of the upright posts, and a common cross-beam overtopping upper ends of the upright posts, whereby an assembly of said upright posts, said base, and said cross-beam form together each of the plurality of piers in a vertically oriented, generally planar, and substantially two-dimensional array, and
said bridge structure comprises a longitudinal plurality of bays, each of the plurality of bays including a plurality of transversely spaced and longitudinally-extending beams which rest upon cross-beams of the piers, and a plurality of longitudinally-spaced and transversely-extending joists interconnecting said beams whereby an assembly of said beams and said joists form together each of the plurality of bays in a horizontally oriented, generally planar, and substantially two-dimensional array.

Dependencies are inferred from the claim text.

Platform resting on the bottom of a body of water, and method of manufacturing the same

Life of this patent

Platform resting on the bottom of a body of water, and method of manufacturing the same

Life of this patent

Abstract

Claims5