DESIGN, FOUNDATIONS, INSPECTION, LOADING, OFFSHORE CONSTRUCTION WORKS,PERFORMANCE, PILE FOUNDATIONS, SEA BED, SITE INVESTIGATIONS, SOIL MECHANICS,STRUCTURAL GEOLOGY
被代替标准
S472.1-M1989
适用范围
This Commentary applies to the design of foundations for fixed offshore
structures. The term "foundation" is defined as the seabed, any fill, and any
artificial elements (eg, piles or skirts) that penetrate or rest upon these
materials and that in whole or in part support production structures and
facilities. The Standard is divided into subsections that address
(a) site investigations (Clause 4);
(b) general engineering principles (Clause 5);
(c) foundations for gravity-base structures (Clause 6);
(d) fill structures (Clause 7);
(e) fill-retention structures (Clause 8);
(f) pile foundations (Clause 9);
(g) inspection and performance monitoring (Clause 10); and
(h) decommissioning (Clause 11). There is limited experience with fixed offshore production structures in the
Canadian environment. Canada has, however, been a leader in the design,
construction, and operation of fixed hydrocarbon exploration structures in
ice-infested waters. World experience with fixed offshore production structures stems primarily from
installations in the North Sea and the Gulf of Mexico. Such experience
provides an excellent starting database. However, the geological and
environmental conditions in Canadian offshore regions are unique in many
respects. In recognition of the unique environmental conditions that characterize the
Canadian offshore regions, as well as the lack of national precedents, the
Standard has been written as a "performance" Standard and, therefore, does not
detail specific solution methodologies. It emphasizes the use of good
geotechnical practice, engineering, and construction that give due regard to
precedent, and the importance of effective construction inspection and
operational monitoring to complement design. This Commentary is intended to provide initial design guidance that is
substantiated by the use of references. However, due to the likelihood of
changes in the state-of-the-art, it is incumbent upon the user of this
Commentary to assess the appropriateness of the references cited. In summary, the Standard, together with this Commentary, has been written to
provide as much latitude as possible to responsible designers, owners, and
operators in order to allow them to effectively address the challenges of
geotechnical engineering in the Canadian offshore regions.