Whole-life geotechnical response of tolerably mobile subsea infrastructure

Michael John Cocjin

    Research output: ThesisDoctoral Thesis

    423 Downloads (Pure)

    Abstract

    The study explores the novel concept of tolerable mobility of subsea mudmat foundations supporting pipelines as a means to reduce the required mudmat size and weight to meet installation vessel limitations. A comprehensive set of mudmat and pipeline geotechnical centrifuge tests data, supported by a theoretical framework is presented. The study relates mudmat and pipeline behaviour to changes in shear strength of the soil interacting with the infrastructure over the operational life. Key results quantify the increase in mudmat capacity due to repeated shearing and reconsolidation, and the accumulation of settlement and rotation over a typical life cycle of a field, providing insights to assist geotechnical subsea foundation design.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    Award date16 May 2017
    DOIs
    Publication statusUnpublished - 2016

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