A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge
Jack-up barges are commonly used for marine operations in the offshore oil and gas, and offshore wind industries. A critical phase within the marine operation activities is the positioning of the jack-up legs onto the seabed. During this process, large impact velocities and forces may arise from the...
Published in: | Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium |
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Language: | English |
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American Society of Mechanical Engineers (ASME)
2017
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Online Access: | http://hdl.handle.net/11250/2468279 https://doi.org/10.1115/OMAE2017-62034 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2468279 2023-05-15T14:24:30+02:00 A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge Jiang, Zhiyu Guachamin Acero, Wilson Ivan Gao, Zhen Li, Lin 2017 http://hdl.handle.net/11250/2468279 https://doi.org/10.1115/OMAE2017-62034 eng eng American Society of Mechanical Engineers (ASME) ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium urn:isbn:978-0-7918-5777-9 http://hdl.handle.net/11250/2468279 https://doi.org/10.1115/OMAE2017-62034 cristin:1499386 1-13 9 Chapter Peer reviewed 2017 ftntnutrondheimi https://doi.org/10.1115/OMAE2017-62034 2019-09-17T06:52:53Z Jack-up barges are commonly used for marine operations in the offshore oil and gas, and offshore wind industries. A critical phase within the marine operation activities is the positioning of the jack-up legs onto the seabed. During this process, large impact velocities and forces may arise from the barge’s heave, roll and pitch motions, and structural damage of the legs can occur. This paper numerically investigates the effect of a flopper stopper (FS) on the motion responses of a jack-up barge from the offshore wind industry. The FS is known as a passive roll compensation device. It is suspended from the side of the barge by means of wire ropes and cantilever beams. A simple geometry of an FS is proposed, and the working principle introduced. For the loading condition before the leg-soil impact occurs, global dynamic analyses of the coupled system are conducted. Characteristic values of impact velocities are used to establish the jack-up operational limits in terms of the significant wave height and peak period. By comparing the operational limits for the barge with and without FS, it is found that FS should be placed on the weather side. At beam seas, the current FS can lead to a maximum increase in the operational wave height limit of 35%, whereas for the other wave headings, it may not be beneficial to use FS. publishedVersion (c) 2017 by ASME Book Part Arctic NTNU Open Archive (Norwegian University of Science and Technology) Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Jack-up barges are commonly used for marine operations in the offshore oil and gas, and offshore wind industries. A critical phase within the marine operation activities is the positioning of the jack-up legs onto the seabed. During this process, large impact velocities and forces may arise from the barge’s heave, roll and pitch motions, and structural damage of the legs can occur. This paper numerically investigates the effect of a flopper stopper (FS) on the motion responses of a jack-up barge from the offshore wind industry. The FS is known as a passive roll compensation device. It is suspended from the side of the barge by means of wire ropes and cantilever beams. A simple geometry of an FS is proposed, and the working principle introduced. For the loading condition before the leg-soil impact occurs, global dynamic analyses of the coupled system are conducted. Characteristic values of impact velocities are used to establish the jack-up operational limits in terms of the significant wave height and peak period. By comparing the operational limits for the barge with and without FS, it is found that FS should be placed on the weather side. At beam seas, the current FS can lead to a maximum increase in the operational wave height limit of 35%, whereas for the other wave headings, it may not be beneficial to use FS. publishedVersion (c) 2017 by ASME |
format |
Book Part |
author |
Jiang, Zhiyu Guachamin Acero, Wilson Ivan Gao, Zhen Li, Lin |
spellingShingle |
Jiang, Zhiyu Guachamin Acero, Wilson Ivan Gao, Zhen Li, Lin A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
author_facet |
Jiang, Zhiyu Guachamin Acero, Wilson Ivan Gao, Zhen Li, Lin |
author_sort |
Jiang, Zhiyu |
title |
A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
title_short |
A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
title_full |
A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
title_fullStr |
A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
title_full_unstemmed |
A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge |
title_sort |
numerical study on a flopper stopper for leg positioning of a jack-up barge |
publisher |
American Society of Mechanical Engineers (ASME) |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2468279 https://doi.org/10.1115/OMAE2017-62034 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
1-13 9 |
op_relation |
ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium urn:isbn:978-0-7918-5777-9 http://hdl.handle.net/11250/2468279 https://doi.org/10.1115/OMAE2017-62034 cristin:1499386 |
op_doi |
https://doi.org/10.1115/OMAE2017-62034 |
container_title |
Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium |
_version_ |
1766296917452521472 |