Changing soil strength and stiffness during pipe-soil interaction at the touch down zone

Zhechen Hou

Research output: ThesisDoctoral Thesis

47 Downloads (Pure)

Abstract

Steel catenary risers (SCRs) are pipelines widely used for transporting hydrocarbons from subsea fields to hosting vessels. The long-term fatigue life assessment of SCRs at the touchdown zone, where complex soil-fluid-structure interaction occurs, remains a significant challenge for designers. A key question generating considerable debate relates to the evolution of the cyclic soil stiffness and the associated competing effects of remoulding with those of consolidation. Centrifuge tests were performed to reveal the soil stiffness evolution under different loading regimes in overconsolidated sediments, which typically occurs in strong crusts of Gulf of Guinea, Gulf of Mexico, and North West Shelf.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Gaudin, Christophe, Supervisor
  • Randolph, Mark, Supervisor
  • Sahdi, Fauzan, Supervisor
Award date16 Apr 2021
DOIs
Publication statusUnpublished - 2020

Fingerprint

Dive into the research topics of 'Changing soil strength and stiffness during pipe-soil interaction at the touch down zone'. Together they form a unique fingerprint.

Cite this