| 摘要 |
<p>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.</p> |
