Scipediacontent: Scipediacontent moved page Draft Content 962887158 to McMaster et al 2012a

2021-02-02T00:37:24Z

Scipediacontent moved page Draft Content 962887158 to McMaster et al 2012a

Scipediacontent: Created page with " == Abstract == This paper describes the work performed to assess the stability of an existing pipeline off the North Western coast of Western Australia. Originally, the pipe..."

2021-02-02T00:37:19Z

Created page with " == Abstract == This paper describes the work performed to assess the stability of an existing pipeline off the North Western coast of Western Australia. Originally, the pipe..."

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== Abstract ==

This paper describes the work performed to assess the stability of an existing pipeline off the North Western coast of Western Australia. Originally, the pipeline was post-trenched (for stability), by ploughing. The plough formed an open v-shaped trench below the pipeline. Several years after the pipeline was installed, a severe cyclone caused significant changes to the seabed along the pipeline. The v-shaped ploughed trench is generally no longer visible with the trench backfilled in places and the pipeline exposed in others. In addition to this, the embedment profile either side of the pipeline was often found to be assymetrical, with higher embedment on one side of the pipeline relative to the other. Current on-bottom stability guidelines and recommended practices do not account for the effects of assymetrical embedment and seabed mobility (Ref. 5). These two factors are believed to contribute significantly to the overall stability of the pipeline. Consequently, it was decided to use physical model testing to obtain a better understanding of hydrodynamic loading and changes in embedment over the duration of a design storm. The physical model testing was performed for various pipeline embedment profiles. The results of these 2D physical model tests were then applied to the 3D FEA on-bottom stability software, CORUS 3D. This paper provides a detailed description of the physical model testing program performed as part of the pipeline stability assessment. The method used to combine the results of the physical model testing and apply them to the 3D FEA on-bottom stability software is also presented.

== Original document ==

The different versions of the original document can be found in:

* [http://pdfs.semanticscholar.org/d340/5c45c70926eca55d105492e07cfbf4cfe7eb.pdf http://pdfs.semanticscholar.org/d340/5c45c70926eca55d105492e07cfbf4cfe7eb.pdf]

* [http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2012-83291/4428931/225_1.pdf http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2012-83291/4428931/225_1.pdf],
: [http://dx.doi.org/10.1115/omae2012-83291 http://dx.doi.org/10.1115/omae2012-83291]

* [http://atteris.com.au/wp-content/uploads/2014/11/On-Bottom-Stability-Analysis-for-a-Pipeline-on-a-Mobile-Seabed1.pdf http://atteris.com.au/wp-content/uploads/2014/11/On-Bottom-Stability-Analysis-for-a-Pipeline-on-a-Mobile-Seabed1.pdf],
: [https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2012/44908/225/270122 https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2012/44908/225/270122],
: [http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1732720 http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1732720],
: [https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1732720 https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1732720],
: [https://fluidsengineering.asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2012/44908/225/270122 https://fluidsengineering.asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2012/44908/225/270122],
: [https://academic.microsoft.com/#/detail/2318846874 https://academic.microsoft.com/#/detail/2318846874]

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McMaster et al 2012a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 962887158 to McMaster et al 2012a

Scipediacontent: Created page with " == Abstract == This paper describes the work performed to assess the stability of an existing pipeline off the North Western coast of Western Australia. Originally, the pipe..."