Building method and apparatus

E - Fixed Constructions – 02 – D

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Details

E02D 31/10 (2006.01) E02D 27/01 (2006.01) E04G 11/04 (2006.01) E04G 11/48 (2006.01)

Patent

CA 2103564

A method of building a structure (22) on a substrate (14), said method including the steps of providing on the substrate (14) a support arrangement capable of adopting a first, substantially rigid state whilst the structure (22) is being built thereabove, and a subsequent, second state permitting the accommodation of movement of, and/or forces in the substrate (e.g. due to heave). The support arrangement comprises fluid confinable means (16) which, in the arrangement's first state, confines a fluid therein to a first space and is operable (via said fluid) to support the structure (22) or at least parts thereof above the substrate (14) and which, in the arrangement's second state, does not confine the fluid and is either in a reduced space or is readily compressible to a reduced space by said movement and/or forces. The fluid confining means may comprise a container comprising a flexible-walled main body (16) and a closure member (20) for the body, said closure member comprising, as at least part of its wall, an element degradable in a predictable manner with the intended fluid contents of the container. In a particularly preferred embodiment, the degradable element comprises a magnesium alloy to degrade in a predictable manner by the effect of water or a saline solution within the container.

Méthode de construction d'une structure (22) sur un substrat (14), méthode qui permet de fournir sur le substrat (14) un système de soutien capable d'assumer un premier état essentiellement rigide pendant la construction de la structure, et un second état composant avec le mouvement du substrat (14) et/ou avec les forces s'y exerçant (p. ex. : en raison du soulèvement). Le système de soutien comporte un élément pour confiner des liquides (16) qui, dans le premier état du système, confine un liquide dans un premier espace. L'élément fonctionne (via le liquide en question) pour soutenir la structure (22) ou au moins certaines parties de cette dernière au-dessus du substrat (14). Dans le second état du système, l'élément ne confine pas le liquide et se trouve dans un espace réduit ou est facilement compressible en un espace réduit par le mouvement ou les forces du substrat (14). L'élément pour confiner des liquides peut comporter un contenant présentant un corps principal à parois souples (16) et un élément de fermeture (20) pour le corps. L'élément en question comporte, pour au moins une partie de sa paroi, un élément dégradable d'une manière prévisible dans le contenu liquide prévu du contenant. Dans un modèle privilégié en particulier, l'élément dégradable comprend un alliage de magnésium qui se dégrade d'une manière prévisible sous l'effet de l'eau ou d'une solution saline à l'intérieur du contenant.

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