Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt: Lecture Notes in Civil Engineering

Research output: Chapter in Book/Conference paperChapter

Abstract

Lateral soil stiffness has a strong influence on the overall strength and fatigue life of well conductors and piles. This paper reviews data from centrifuge testing of a short model pile embedded in carbonate silt, which was subjected to packets of cyclic lateral displacement. Key conclusions are that (i) cyclic lateral stiffness is significantly affected by prior loading history due to the generation and dissipation of pore pressure, (ii) the generation process leads to the well-recognized softening of p-y curves, (iii) the dissipation process leads to a less-recognised stiffening of the response, and (iv) carbonate silts show a different shape of cyclic lateral response compared to non-carbonate clays, meaning that existing ‘fully degraded’ steady state p-y models are not appropriate. Future ideas to capture these improvements in lateral response modelling are set out, with the aim of allowing more accurate and reliable design of conductors and piles. © Springer Nature Singapore Pte Ltd. 2019.
Original languageEnglish
Title of host publicationVSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering
Place of PublicationSingapore
PublisherSpringer
Pages362-368
Number of pages7
Volume18
ISBN (Print)23662557 (ISSN)
DOIs
Publication statusPublished - 2019

Publication series

NameLecture Notes in Civil Engineering
PublisherSpringer
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Fingerprint

civil engineering
stiffness
silt
pile
life cycle
carbonate
dissipation
centrifuge
softening
fatigue
pore pressure
clay
history
modeling
soil

Cite this

Doherty, J., White, D., Watson, P., & Grime, A. (2019). Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt: Lecture Notes in Civil Engineering. In VSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering (Vol. 18, pp. 362-368). (Lecture Notes in Civil Engineering). Singapore: Springer. https://doi.org/10.1007/978-981-13-2306-5_50
Doherty, J. ; White, D. ; Watson, P. ; Grime, A. / Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt : Lecture Notes in Civil Engineering. VSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering. Vol. 18 Singapore : Springer, 2019. pp. 362-368 (Lecture Notes in Civil Engineering).
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Doherty, J, White, D, Watson, P & Grime, A 2019, Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt: Lecture Notes in Civil Engineering. in VSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering. vol. 18, Lecture Notes in Civil Engineering, Springer, Singapore, pp. 362-368. https://doi.org/10.1007/978-981-13-2306-5_50

Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt : Lecture Notes in Civil Engineering. / Doherty, J.; White, D.; Watson, P.; Grime, A.

VSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering. Vol. 18 Singapore : Springer, 2019. p. 362-368 (Lecture Notes in Civil Engineering).

Research output: Chapter in Book/Conference paperChapter

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Doherty J, White D, Watson P, Grime A. Life cycle changes in p-y stiffness for a conductor pile installed in carbonate silt: Lecture Notes in Civil Engineering. In VSOE 2018: Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering. Vol. 18. Singapore: Springer. 2019. p. 362-368. (Lecture Notes in Civil Engineering). https://doi.org/10.1007/978-981-13-2306-5_50