Evolving Soil-Conductor Stiffness Due to Multiple-Episode Cyclic Loading

Guevara, M.; Doherty, James; Watson, P.K.; White, David

doi:10.1007/978-981-16-7735-9_30

Cited by 2 publications

(1 citation statement)

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“…Reliance on strength gains from self-weight consolidation just between installation and hook up or operation has been shown to provide potentially significant reductions in required shallow foundation footprints [7]. Prediction of evolving stiffness over the life of a monopile-supported wind turbine can provide more realistic predictions of through-life lateral displacements, better informing fatigue life predictions [8]; or better predictions of accumulated displacements or ratcheting of a taut moored suction pile anchor for a floating platform [9,10].…”

Section: Application To Different Stages Of Design Lifementioning

confidence: 99%

Whole Life Design: Theory and Applications of This New Approach to Offshore Geotechnics

Gourvenec

2022

Indian Geotech J

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Geotechnical properties can evolve throughout the design life of a structure due to actions imposed during installation, the operational life or late and end of life management of an asset. Whole life geotechnical design seeks to predict soil-structure responses across the design life by considering the whole life of imposed actions coupled with geotechnical properties that evolve with each action. In contrast, traditional geotechnical design considers the ‘worst case’ single value of minimum resistance or stiffness coupled with the ‘worst case’ single value of maximum action over the design life. The emerging philosophy of whole life geotechnical design checks limit states at different stages of the ‘whole life’ against ‘current’ geotechnical properties, updated based on the processes that have occurred and the responses that have accumulated earlier in the design life. Consideration of whole life geotechnical response provides greater insight, enabling forecasting of the response of a supported structure through and beyond its design life. Insights can be applied at the initial design stage for optimal sizing; through life for assessing or predicting cumulative displacements or changes in resistance, and assumptions in the initial design against observed performance. By extension, these insights can be used to predict actual remaining design life; for re-lifing or re-purposing; and decommissioning. This paper presents the overarching philosophy of whole life geotechnical design, theory underpinning the evolution of geotechnical properties, derivation of the appropriate parameters, and some applications. This paper demonstrates the potential of whole life design, particularly to the emerging opportunities of offshore renewable energy infrastructure.

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Section: Application To Different Stages Of Design Lifementioning

confidence: 99%