Offshore Structures: Volume I: Conceptual Desig...

Concrete offshore structures are mostly used in the petroleum industry as drilling, extraction or storage units for crude oil or natural gas. Those large structures house machinery and equipment needed to drill and/or extract oil and gas. But concrete structures are not only limited to applications within the oil and gas industry. Several conceptual studies have shown recently, that concrete support structures for offshore wind turbines are very competitive compared to common steel structures, especially for larger water depths.

Offshore Structures: Volume I: Conceptual Desig...

Depending on the circumstances, platforms may be attached to the ocean floor, consist of an artificial island, or be floating. Generally, offshore concrete structures are classified into fixed and floating structures. Fixed structures are mostly built as concrete gravity based structures (CGS, also termed as caisson type), where the loads bear down directly on the uppermost layers as soil pressure. The caisson provides buoyancy during construction and towing and acts also as a foundation structure in the operation phase. Furthermore, the caisson could be used as storage volume for oil or other liquids.

The design of North Sea platforms has been an active effort since the early 1970s. The experience gained to date has resulted in an increasingly greater degree of maximising the work performed onshore, thus minimising the amount performed onshore, thus minimising the amount of offshore hook-up. Since these projects are complex and expensive, the success of performing the work on schedule and within budget is determined to a greater extent by the initial decisions taken at the conceptual stage of the project. project. It should be noted that this paper is based on the authors' experience with the most complex type of platforms. The harsh environmental conditions with 30 metre high waves require platforms of usual complexity and strength, platforms of usual complexity and strength, together with advanced design features to protect operating equipment. Many platforms in other parts of the world do not have to operate under parts of the world do not have to operate under these conditions and therefore tend to be simpler and less expensive installations.

-specific innovations and processes were needed to ensure safety and efficiency in the building and operation of Ocean Farm 1. With the main goal of any fish farm to have a large, safe volume of water where fish can be produced, new structures designed for offshore aquaculture are far removed from their counterparts in the offshore energy sector. As the first structure of its kind, Ocean Farm 1

This course follows on from the Level 3 Design of Structural Elements course and the Level 4 Advanced Structural Design course, extending the earlier concepts into areas relevant to Offshore Structural Design. The course aim is to introduce the student to some specialised fields of conceptual structural engineering design in an offshore context, and to develop confidence in these areas. The course divides into current main topics of offshore structures and involves hand calculations with the aid of spreadsheets and advanced computational modelling for accurate loading, analysis and design. 041b061a72