Centrifuge investigations of normal and reverse fault interaction with jack-up rig spudcan foundations

Katy Oakes; Michael Brown; Jonathan Knappett; Ioannis Anastasopoulos

Centrifuge investigations of normal and reverse fault interaction with jack-up rig spudcan foundations

Katy Oakes (Lead / Corresponding author), Michael Brown, Jonathan Knappett, Ioannis Anastasopoulos

Civil Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

This paper introduces the methodology for a series of centrifuge model tests which investigated the interaction between geological faults, in sand and a jack-up rig with spudcan foundations. Understanding the fault rupture-soil-foundation-structure interaction (FR-SFSI) is critical when attempting to develop platform design and risk mitigation strategies. The findings may be used alongside other hazard risk mitigation strategies deployed during site investigations and assessments of rig operations. Results show how a reverse fault propagates though the soil and directly intercepts the spudcan foundations. The jack-up causes fault diversion and bifurcation yet still suffers from significant rotations at the hull and large axial forces in the legs. This research forms part of a wider study which includes finite-element analyses (FEA) of the jack-up-fault interaction. The centrifuge results will be used to validate and further calibrate the numerical analyses.

Original language	English
Number of pages	12
Publication status	Published - 12 Sept 2019
Event	International Conference: The Jack-up Rig - City University, London, United Kingdom Duration: 12 Sept 2019 → 13 Sept 2019

Conference

Conference	International Conference: The Jack-up Rig
Country/Territory	United Kingdom
City	London
Period	12/09/19 → 13/09/19

Keywords

Faulting
Jackup rig
spudcan

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

1 Conference contribution
1 Paper

Centrifuge and Numerical Investigation of Fault Rupture Interaction with a Three-legged Jack-up Rig Founded on Spudcan Foundations
Oakes, K., Brown, M., Knappett, J. & Anastasopoulos, I., 5 Jul 2022.
Research output: Contribution to conference › Paper › peer-review

Open Access
File
Numerical Modelling of Jack-Up Rig Spudcan Interaction with Normal Faults
Oakes, K. J., Brown, M. J. & Anastasopoulos, I., 12 Sept 2017, Offshore Site Investigation and Geotechnics: Smarter Solutions for Future Offshore Developments: Proceedings of the 8th International Conference, held 12–14 September 2017 at the Royal Geographical Society, London. Society for Underwater Technology, Vol. 1-2. p. 1026-1033 8 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access
File
114 Downloads (Pure)

Assessing the Interaction Between Earthquake Faults and Jack-Up Rigs
Oakes, K. J. (Author), Brown, M. (Supervisor) & Anastasopoulos, I. (Supervisor), 2022
Student thesis: Doctoral Thesis › Doctor of Philosophy

File

1 Invited talk

Invited talk to Heerema Marine Contractors Innovation and Geotechnics Team: Some examples of the Industry and Government funded research in the Renewable Energy Sector
Brown, M. (Speaker)
9 Dec 2022
Activity: Talk or presentation types › Invited talk

Cite this

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title = "Centrifuge investigations of normal and reverse fault interaction with jack-up rig spudcan foundations",

abstract = "This paper introduces the methodology for a series of centrifuge model tests which investigated the interaction between geological faults, in sand and a jack-up rig with spudcan foundations. Understanding the fault rupture-soil-foundation-structure interaction (FR-SFSI) is critical when attempting to develop platform design and risk mitigation strategies. The findings may be used alongside other hazard risk mitigation strategies deployed during site investigations and assessments of rig operations. Results show how a reverse fault propagates though the soil and directly intercepts the spudcan foundations. The jack-up causes fault diversion and bifurcation yet still suffers from significant rotations at the hull and large axial forces in the legs. This research forms part of a wider study which includes finite-element analyses (FEA) of the jack-up-fault interaction. The centrifuge results will be used to validate and further calibrate the numerical analyses.",

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T1 - Centrifuge investigations of normal and reverse fault interaction with jack-up rig spudcan foundations

AU - Oakes, Katy

AU - Brown, Michael

AU - Knappett, Jonathan

AU - Anastasopoulos, Ioannis

PY - 2019/9/12

Y1 - 2019/9/12

N2 - This paper introduces the methodology for a series of centrifuge model tests which investigated the interaction between geological faults, in sand and a jack-up rig with spudcan foundations. Understanding the fault rupture-soil-foundation-structure interaction (FR-SFSI) is critical when attempting to develop platform design and risk mitigation strategies. The findings may be used alongside other hazard risk mitigation strategies deployed during site investigations and assessments of rig operations. Results show how a reverse fault propagates though the soil and directly intercepts the spudcan foundations. The jack-up causes fault diversion and bifurcation yet still suffers from significant rotations at the hull and large axial forces in the legs. This research forms part of a wider study which includes finite-element analyses (FEA) of the jack-up-fault interaction. The centrifuge results will be used to validate and further calibrate the numerical analyses.

AB - This paper introduces the methodology for a series of centrifuge model tests which investigated the interaction between geological faults, in sand and a jack-up rig with spudcan foundations. Understanding the fault rupture-soil-foundation-structure interaction (FR-SFSI) is critical when attempting to develop platform design and risk mitigation strategies. The findings may be used alongside other hazard risk mitigation strategies deployed during site investigations and assessments of rig operations. Results show how a reverse fault propagates though the soil and directly intercepts the spudcan foundations. The jack-up causes fault diversion and bifurcation yet still suffers from significant rotations at the hull and large axial forces in the legs. This research forms part of a wider study which includes finite-element analyses (FEA) of the jack-up-fault interaction. The centrifuge results will be used to validate and further calibrate the numerical analyses.

KW - Faulting

KW - Jackup rig

KW - spudcan

M3 - Paper

T2 - International Conference: The Jack-up Rig

Y2 - 12 September 2019 through 13 September 2019

ER -

Centrifuge investigations of normal and reverse fault interaction with jack-up rig spudcan foundations

Abstract

Conference

Keywords

UN SDGs

Fingerprint

Research output

Centrifuge and Numerical Investigation of Fault Rupture Interaction with a Three-legged Jack-up Rig Founded on Spudcan Foundations

Numerical Modelling of Jack-Up Rig Spudcan Interaction with Normal Faults

Student theses

Assessing the Interaction Between Earthquake Faults and Jack-Up Rigs

Activities

Invited talk to Heerema Marine Contractors Innovation and Geotechnics Team: Some examples of the Industry and Government funded research in the Renewable Energy Sector

Cite this