Seafloor Anchoring for Platforms in the Messina Strait

Seafloor Anchoring for Platforms in the Messina Strait
Author: Antonioluca Manno
Publisher:
Total Pages: 139
Release: 2010
Genre:
ISBN:

The importance of properly designing and selecting an anchor is key to reliable techniques for floating offshore platforms including power generation from marine currents. Numerous studies have demonstrated how the uplift capacity of embedment anchors is highly dependent on the soil properties and the anchor geometry. This work focuses in detail on the behavior of vertically loaded circular anchors to keep a floating structure stationary in the offshore environment. The main goal of this research was to find and evaluate an alternative to the foundations employed in the M. Eng. 2009/10 offshore project. The initial option consisted of drag embedment anchors and suction anchors as the foundations for the floating structure located in the Messina Strait that carries a horizontal-axis marine current turbine. Examining past theories and tests, and using dimensional analysis, we determined that circular plate anchors of 4.22 m and 2.72 m in diameter represent a good alternative design for the foundations of the front and back floating platforms. These anchors have an embedment depth-to-diameter ratio of 3 and a plate thickness-to-diameter ratio of 3%. Therefore, in comparison to the initial foundation options developed in the M. Eng. project, the solution with circular anchors has the advantage to reduce the overall dimensions of the anchors, reduce the material necessary for their manufacture, minimize the duration and cost of installation, and provide an efficient anchoring system independent of the local current direction.

Anchoring of Floating Structures

Anchoring of Floating Structures
Author: Association de recherche en géotechnique marine (France)
Publisher: Editions TECHNIP
Total Pages: 256
Release: 1990
Genre: Technology & Engineering
ISBN: 9782710805724

Construction of Prestressed Concrete Structures

Construction of Prestressed Concrete Structures
Author: Ben C. Gerwick, Jr.
Publisher: John Wiley & Sons
Total Pages: 624
Release: 1997-02-13
Genre: Technology & Engineering
ISBN: 9780471181132

Die zweite Auflage dieses Klassikers - jetzt als Paperback - bietet Profis auf diesem Gebiet eine aktuelle und kompetente Präsentation der Technologie der Vorbelastung von Stahlbeton. Grundlegende Techniken, Materialien und Systeme werden behandelt und vielfältige Anwendungen - Gebäude, Brücken, Bohrplattformen, Straßen, Rollbahnen, Rohrleitungen - erläutert.

Submarine Cables and the Oceans

Submarine Cables and the Oceans
Author: L. Carter
Publisher: UNEP/Earthprint
Total Pages: 68
Release: 2009
Genre: Political Science
ISBN: 9780956338723

There are many things and services in our everyday life that we take for granted, and telecommunications is one of them. We surf the internet, send emails to friends and colleagues abroad, talk to family members in foreign countries over the phone, book airline seats and make banking transactions without actually realizing and appreciating the sophisticated technology that enables us to do so. This report covers the history and nature of cables, their special status in international law, their interaction with the environment and other ocean users and, finally, the challenges of the future. It is an evidence-based synopsis that aims to improve the quality and availability of information to enhance understanding and cooperation between all stakeholders. UNEP-WCMC in collaboration with the International Cable Protection Committee and UNEP has prepared this new report to provide an objective, factual description of the sub-marine cable industry and the interaction of submarine telecommunications (which route 95% of all international communications traffic) with the marine environment. This important report seeks to focus and guide deliberations and decision making on the wise conservation and protection of the oceans in concert with their sustainable management and use.