IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS
Yan SM; Gao FP(高福平); Cao J; Zhang EY; Li GH; Wu YX(吴应湘); Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Hydrodynam & Ocean Engn, Beijing 100080, Peoples R China.
Source PublicationPROCEEDINGS OF THE ASME 29TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2010, VOL 1
2010
Conference Name29th ASME International Conference on Ocean, Offshore and Arctic Engineering
Conference DateJUN 06-11, 2010
Conference PlaceShanghai, PEOPLES R CHINA
AbstractThe ultimate lateral soil resistance for pipe losing lateral stability on a sandy seabed under the action of ocean currents is investigated with a newly developed test facility by employing mechanical actuators to simulate hydrodynamic loads on the pipe. Two kinds of constraint conditions, i.e. anti-rolling pipe and freely-laid pipe, are taken into account, respectively. The experimental observations indicate that, the horizontal lateral soil resistance increases gradually to its maximum (ultimate) value when the additional settlement is fully developed. The buildup of the ultimate lateral soil resistance to the anti-rolling pipe benefits from not only the additional settlements but also the sand-particle collections in front of the moving pipe, especially for the anti-rolling pipes. The lateral-soil-resistance coefficient for the anti-rolling pipe is much larger than that for the freely-laid pipe. The pipe surface roughness also affects the lateral stability of anti-rolling pipes. A comparison is made between present mechanical-actuator tests and the previous water-flume tests, indicating the results of two types of tests are comparable and the local scour may reduce the pipe lateral stability in ocean currents.
WOS IDWOS:000290548800082
ISBN978-0-7918-4909-5
URL查看原文
Indexed ByCPCI-S ; EI
Language英语
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Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58876
Collection水动力学与海洋工程重点实验室(2009-2011)
Corresponding AuthorGao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Hydrodynam & Ocean Engn, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Yan SM,Gao FP,Cao J,et al. PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS[C]PROCEEDINGS OF THE ASME 29TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2010, VOL 1,2010.
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