Journal Article
The Role of Soil Structure Interaction in the Fragility Assessment of HP/HT Unburied Subsea Pipelines
Davide Forcellini; Daniele Mina; Hassan Karampour
Journal of Marine Science and Engineering · Vol. 10, Issue 1 · pp. 110 · 2022
Abstract
Subsea high pressure/high temperature (HP/HT) pipelines may be significantly affected by the effects of soil structure interaction (SSI) when subjected to earthquakes. Numerical simulations are herein applied to assess the role of soil deformability on the seismic vulnerability of an unburied pipeline. Overcoming most of the contributions existing in the literature, this paper proposes a comprehensive 3D model of the system (soil + pipeline) by performing OpenSees that allows the representation of non-linear mechanisms of the soil and may realistically assess the induced damage caused by the mutual interaction of buckling and seismic loads. Analytical fragility curves are herein derived to evaluate the role of soil structure interaction in the assessment of the vulnerability of a benchmark HP/HT unburied subsea pipeline. The probability of exceeding selected limit states was based on the definition of credited failure criteria.
Bibliographic Information
| Journal | Journal of Marine Science and Engineering |
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| Publisher | MDPI |
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| Publication Date | 2022-01-14 |
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| Publication Year | 2022 |
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| Volume | 10 |
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| Issue | 1 |
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| Pages | 110 |
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| Document Type | Journal Article |
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| eISSN | 2077-1312 |
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| DOI | 10.3390/jmse10010110 |
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| Subject | Marine science; oceanography; marine engineering; coastal science; marine environment |
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Access Information
This article is openly available from the publisher.