期刊
OCEAN ENGINEERING
卷 38, 期 7, 页码 818-834出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2010.10.021
关键词
Geotechnical engineering; Offshore engineering; In situ testing; Shallow foundations; Anchors; Pipelines; Submarine slides
资金
- State Government of Western Australia through the Centre of Excellence in Science and Innovation
- ARC
- Discovery and Linkage programs
- CSIRO
The paper presents an overview of recent developments in geotechnical analysis and design associated with oil and gas developments in deep water. Typically the seabed in deep water comprises soft, lightly overconsolidated, fine grained sediments, which must support a variety of infrastructure placed on the seabed or anchored to it. A particular challenge is often the mobility of the infrastructure either during installation or during operation, and the consequent disturbance and healing of the seabed soil, leading to changes in seabed topography and strength. Novel aspects of geotechnical engineering for offshore facilities in these conditions are reviewed, including: new equipment and techniques to characterise the seabed; yield function approaches to evaluate the capacity of shallow skirted foundations; novel anchoring systems for moored floating facilities; pipeline and steel catenary riser interaction with the seabed; and submarine slides and their impact on infrastructure. Example results from sophisticated physical and numerical modelling are presented. (C) 2010 Elsevier Ltd. All rights reserved.
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