B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
B63B 5/14 (2006.01) E02B 17/02 (2006.01)
Patent
CA 2224807
There are disclosed embodiments of hollow concrete-walled structures for marine use, and particularly to form a semi-submersible vessel for use in the off-shore oil industry. The structure has concrete walls of hollow structure, and void formers (12) are incorporated in at least some of the concrete walls to provide controlled variation in wall density to meet design requirements. In the application of the invention to a semi-submersible vessel, void formers are cast in situ within the concrete walls of upstanding columns of the vessel, and in which the volume and/or distribution of the void formers in the walls varies in such a way that the density of the columns decrease with height above the base.
La présente invention concerne des réalisations de structures à murs de béton creux destinées à un usage marin, notamment pour former un vaisseau semi-submersible utilisé dans l'industrie du pétrole offshore. La structure comprend des murs de béton à structure creuse; et des formes vides (12) sont incorporées au moins dans certains des murs de béton afin d'obtenir une variation contrôlée de la densité des murs pour satisfaire aux obligations de conception. Dans la réalisation se rapportant au vaisseau semi-submersible, les formes vides sont moulées in situ à l'intérieur des murs de béton formant les colonnes verticales du vaisseau, le volume et/ou la distribution des formes vides dans les murs variant de telle sorte que la densité des colonnes diminue proportionnellement à leur hauteur au-dessus de la base.
Derby Stanley
Jefferson Anthony
Derby Stanley
Jefferson Anthony
Long And Cameron
LandOfFree
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