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Keywords: failure mechanism
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-180
... penetration resistance of soil on a pipe buried under a rock berm. KEY WORDS: Pipeline; rock berm; soft clay bed; downward penetration resistance; finite element limit analysis; upper and lower bounds; failure mechanism. NOMENCLATURE DNV- Det Norske Veritas FELA - Finite element limit analysis bh - Berm...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-137
... possible measures to counteract them, have been launched. A data aggregation project resulted in a defined failure mechanism and root causes. This paper presents a discussion of the mitigation actions implemented across the industry to minimize the occurrence of such failures, taking in consideration...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-200
... large deformation and therefore significantly influence the failure mechanism of the surrounding soil and the soil resistance acting on the pipeline. The pipeline-backfill-trench interaction has not been well considered in the present design guidelines, and usually uniform soil has been considered...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-185
.... The contribution of the interface tension on the pullout capacity is demonstrated, and soil failure mechanisms are investigated. The pullout capacity factors that are influenced by different interface tensile capacities are between the two breakaway conditions. A critical tension factor is defined beyond which...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-211
... canada government reaction force ice keel backfill soil upstream oil & gas failure mechanism offshore pipeline shear strength midstream oil & gas subgouge displacement undrained shear strength displacement soil failure mechanism pike & kenny case 1 ice gouging gouge...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-140
... a significant role in the probability of failure, limiting the use of the RBI methodology. INTRODUCTION During the operational life of the pipes used in oil and gas offshore exploration, different failure mechanisms may arise, including degradation by corrosion. High inspection costs make it difficult...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-103
... foundation wind energy two-layered clay failure mechanism surface foundation social responsibility upper soil upper clay bucket foundation sustainable development strength thickness wind turbine sustainability variation offshore wind turbine ultimate bearing capacity bearing...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2160
...-2021 bearing capacity suction port suction pile seal integrity port plug-port assembly parking port friction mudline subsea manifold o-ring upstream oil & gas suction plug assembly installation failure mechanism Proceedings of the Thirty-first (2021) International Ocean and Polar...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-581
... ISO (2016) and SNAME (2008) are not adequately accurate in predicting the sharp increase in the resistance prior to penetration into the sand layer. In this paper, large deformation finite element (LDFE) analyses that capture the evolving soil failure mechanisms during spudcan penetration in a clay...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-531
... consideration for the design of of ofshore wind power foundations. wind turbine foundation bucket foundation horizontal loading subsea system horizontal bearing capacity bearing capacity displacement platform design renewable energy cbsf failure mechanism social responsibility schematic...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-639
... seabed by using numerical method. Three dimensional large deformation finite element (LDFE) analyses are performed to investigate the spudcan penetration behaviour on a sloping seabed. The foundation responses including failure mechanism, displacements, vertical and horizontal resistance calculated from...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-508
... undrained shear strength benchmark analysis failure mechanism mesh-to-mesh solution mapping marine clay vertical bearing pressure typical gulf ale adaptive equivalent plastic strain upstream oil & gas soil profile cel analysis resistance bearing pressure Large-Deformation Finite Element...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-463
... oil & gas plastic shear strain simulation soil interaction anchor mohr-coulomb model displacement dickin dense sand lateral resistance merifield failure mechanism resistance dilation angle friction angle lateral displacement engineering mmc model interaction Finite Element...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-286
... Abstract Significant uncertainty exists in terms of the underlying soil failure mechanisms governing the behaviour of displacement piles in sand. In addition, the installing pile (diameter D = 0.5~3 m) with a trapped soil wedge at the base and/or the using of a driving shoe often creates...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-525
... ultimate capacity fracture mudline upstream oil & gas assessment subsea system failure mechanism life extension ultimate strength flowline corrosion platform loading A Review of Failure Modes in Ultimate Strength Assessment for Re-qualification and Life Extension of an Oil Field Abe...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-294
... of spudcan geometric characteristics on the failure mechanism and bearing capacity of spudcan foundation are analyzed. The sand plug, formed in the punch-through process directly underneath the spudcan and moved together with the spudcan into the underlying clay soils, is depicted and taken into account...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-261
...) technology is employed to capture the failure mechanism of the sand. The failure mechanism in medium dense and dense sand at the peak resistance clearly shows an inverted trapezoidal shape with a projecting angle of around 2ψ (dilatancy angle). During the softening stage, gradually shrinking of the mobilized...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-333
...) the mobilization of deeper and hence stronger soil and (ii) the potential change in failure mechanism related to the geometry of the foundation. 3. Increased stiffness and hence reduced displacements in all directions. Limited settlement is expected as the caisson will mobilise bearing capacity within deeper...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-169
... ABSTRACT: This paper presents the development of a two-dimensional finite element analysis model, using Finite Element Code PLAXIS, to investigate the behavior of VELPAs in soft clays. It is found that in typical normally consolidated marine clay, a local shear failure mechanism can be used...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-337
...- installation and preloading of the footing. This research notably explores the effect of the circular plan geometry of the footing, and importantly the effect of the central caisson, on the failure mechanisms and the resulting VHM capacity through finite element analysis. Results demonstrated that the central...

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