Consolidation of lumpy clay backfill over buried pipelines
Offshore pipelines are usually buried to protect the pipe from external loads. When trenching is achieved by jetting or ploughing, some clayey soils can be cut into distinct lumps and this lumpy soil is then used as the backfill material under which the pipe is buried. To counter the effects of uphe...
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American Society of Mechanical Engineers
2009
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ftunivdundeepure:oai:discovery.dundee.ac.uk:publications/f294e12b-1e0a-4090-a806-b6f4d86e12c1 2023-05-15T14:22:43+02:00 Consolidation of lumpy clay backfill over buried pipelines Ghahremani, Mahmoud Brennan, Andrew J. 2009 http://discovery.dundee.ac.uk/portal/en/research/consolidation-of-lumpy-clay-backfill-over-buried-pipelines(f294e12b-1e0a-4090-a806-b6f4d86e12c1).html http://hdl.handle.net/10588/f294e12b-1e0a-4090-a806-b6f4d86e12c1 http://www.seatoskymeetings.com/omae2009/ eng eng American Society of Mechanical Engineers info:eu-repo/semantics/restrictedAccess Ghahremani , M & Brennan , A J 2009 , Consolidation of lumpy clay backfill over buried pipelines . in ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering : OMAE 2009, Volume 7 . American Society of Mechanical Engineers , NEW YORK , pp. 313-320 , 28th International Conference on Ocean, Offshore and Arctic Engineering , Honolulu , United States , 31-5 June . contributionToPeriodical 2009 ftunivdundeepure 2017-09-28T19:32:05Z Offshore pipelines are usually buried to protect the pipe from external loads. When trenching is achieved by jetting or ploughing, some clayey soils can be cut into distinct lumps and this lumpy soil is then used as the backfill material under which the pipe is buried. To counter the effects of upheaval buckling, the resistance of the soil to pipe uplift must be known. There is still uncertainty about the performance of lumpy backfill in this regard. A series of centrifuge tests were performed with such soils as backfill, utilising a specially designed pore-pressure measuring pipe, to determine the influence of lump size, lump shape and pullout rate on uplift resistance Backfill comprising larger lumps consolidates quicker than if the backfill lumps are smaller. It is also observed that backfill comprising larger lumps provides greater resistance to pipe uplift after consolidation. Other Non-Article Part of Journal/Newspaper Arctic Discovery - University of Dundee Online Publications |
institution |
Open Polar |
collection |
Discovery - University of Dundee Online Publications |
op_collection_id |
ftunivdundeepure |
language |
English |
description |
Offshore pipelines are usually buried to protect the pipe from external loads. When trenching is achieved by jetting or ploughing, some clayey soils can be cut into distinct lumps and this lumpy soil is then used as the backfill material under which the pipe is buried. To counter the effects of upheaval buckling, the resistance of the soil to pipe uplift must be known. There is still uncertainty about the performance of lumpy backfill in this regard. A series of centrifuge tests were performed with such soils as backfill, utilising a specially designed pore-pressure measuring pipe, to determine the influence of lump size, lump shape and pullout rate on uplift resistance Backfill comprising larger lumps consolidates quicker than if the backfill lumps are smaller. It is also observed that backfill comprising larger lumps provides greater resistance to pipe uplift after consolidation. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Ghahremani, Mahmoud Brennan, Andrew J. |
spellingShingle |
Ghahremani, Mahmoud Brennan, Andrew J. Consolidation of lumpy clay backfill over buried pipelines |
author_facet |
Ghahremani, Mahmoud Brennan, Andrew J. |
author_sort |
Ghahremani, Mahmoud |
title |
Consolidation of lumpy clay backfill over buried pipelines |
title_short |
Consolidation of lumpy clay backfill over buried pipelines |
title_full |
Consolidation of lumpy clay backfill over buried pipelines |
title_fullStr |
Consolidation of lumpy clay backfill over buried pipelines |
title_full_unstemmed |
Consolidation of lumpy clay backfill over buried pipelines |
title_sort |
consolidation of lumpy clay backfill over buried pipelines |
publisher |
American Society of Mechanical Engineers |
publishDate |
2009 |
url |
http://discovery.dundee.ac.uk/portal/en/research/consolidation-of-lumpy-clay-backfill-over-buried-pipelines(f294e12b-1e0a-4090-a806-b6f4d86e12c1).html http://hdl.handle.net/10588/f294e12b-1e0a-4090-a806-b6f4d86e12c1 http://www.seatoskymeetings.com/omae2009/ |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Ghahremani , M & Brennan , A J 2009 , Consolidation of lumpy clay backfill over buried pipelines . in ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering : OMAE 2009, Volume 7 . American Society of Mechanical Engineers , NEW YORK , pp. 313-320 , 28th International Conference on Ocean, Offshore and Arctic Engineering , Honolulu , United States , 31-5 June . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766295242954244096 |