PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS
The 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...
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AMER SOC MECHANICAL ENGINEERS
2010
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ftchinacadsimech:oai:dspace.imech.ac.cn:311007/58876 2023-05-15T14:23:17+02:00 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. 2010 http://dspace.imech.ac.cn/handle/311007/58876 英语 eng AMER SOC MECHANICAL ENGINEERS PROCEEDINGS OF THE ASME 29TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2010, VOL 1 Yan SM,Gao FP,Cao J,et al. PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS[C]. 见:29th ASME International Conference on Ocean, Offshore and Arctic Engineering. Shanghai, PEOPLES R CHINA. JUN 06-11, 2010.10.1115/OMAE2010-20183 http://dspace.imech.ac.cn/handle/311007/58876 10.1115/OMAE2010-20183 cn.org.cspace.api.content.CopyrightPolicy@18ec997 会议论文 2010 ftchinacadsimech 2022-12-19T18:22:42Z The 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. Other/Unknown Material Arctic IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) |
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Open Polar |
collection |
IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadsimech |
language |
English |
description |
The 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. |
format |
Other/Unknown Material |
author |
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. |
spellingShingle |
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. PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
author_facet |
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. |
author_sort |
Yan SM |
title |
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
title_short |
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
title_full |
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
title_fullStr |
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
title_full_unstemmed |
PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS |
title_sort |
physical modeling of untrenched pipeline breakout from sand-bed in ocean currents |
publisher |
AMER SOC MECHANICAL ENGINEERS |
publishDate |
2010 |
url |
http://dspace.imech.ac.cn/handle/311007/58876 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
PROCEEDINGS OF THE ASME 29TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2010, VOL 1 Yan SM,Gao FP,Cao J,et al. PHYSICAL MODELING OF UNTRENCHED PIPELINE BREAKOUT FROM SAND-BED IN OCEAN CURRENTS[C]. 见:29th ASME International Conference on Ocean, Offshore and Arctic Engineering. Shanghai, PEOPLES R CHINA. JUN 06-11, 2010.10.1115/OMAE2010-20183 http://dspace.imech.ac.cn/handle/311007/58876 10.1115/OMAE2010-20183 |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@18ec997 |
_version_ |
1766295851764809728 |