Unlocking the changing strength of fine-grained soils in numerical analyses

Vikram Singh

doi:10.26182/89w4-xr29

Unlocking the changing strength of fine-grained soils in numerical analyses

Vikram Singh

Research output: Thesis › Doctoral Thesis

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Abstract

Predictions of changing strength of fine-grained soils due to strain-rate, remoulding, and consolidation processes are crucial to design and stability analysis of 'whole-life' behaviour of several geotechnical structures, such as seabed cables, pipelines, and anchoring systems. This thesis incorporates the changing strength of soft soils into numerical analyses via a combination of constitutive and applied modelling techniques. The numerical analyses involved development and implementation of two strain-softening-hardening constitutive models which were incorporated in simulations of T-bar and ring penetrometer tests in order to investigate changing strength and frictional properties of soft sediments. The results were compared with experiments.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Stanier, Sam, Supervisor Bienen, Britta, Supervisor Randolph, Mark, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	12 Mar 2022
DOIs	https://doi.org/10.26182/89w4-xr29
Publication status	Unpublished - 2022

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10.26182/89w4-xr29

THESIS - DOCTOR OF PHILOSOPHY - SINGH, Vikram - 2022
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Cite this

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abstract = "Predictions of changing strength of fine-grained soils due to strain-rate, remoulding, and consolidation processes are crucial to design and stability analysis of 'whole-life' behaviour of several geotechnical structures, such as seabed cables, pipelines, and anchoring systems. This thesis incorporates the changing strength of soft soils into numerical analyses via a combination of constitutive and applied modelling techniques. The numerical analyses involved development and implementation of two strain-softening-hardening constitutive models which were incorporated in simulations of T-bar and ring penetrometer tests in order to investigate changing strength and frictional properties of soft sediments. The results were compared with experiments.",

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AB - Predictions of changing strength of fine-grained soils due to strain-rate, remoulding, and consolidation processes are crucial to design and stability analysis of 'whole-life' behaviour of several geotechnical structures, such as seabed cables, pipelines, and anchoring systems. This thesis incorporates the changing strength of soft soils into numerical analyses via a combination of constitutive and applied modelling techniques. The numerical analyses involved development and implementation of two strain-softening-hardening constitutive models which were incorporated in simulations of T-bar and ring penetrometer tests in order to investigate changing strength and frictional properties of soft sediments. The results were compared with experiments.

KW - offshore geotechnics

KW - fine-grained soils

KW - changing strength

KW - numerical modeling

KW - constitutive modelling

KW - large deformation finite element analysis

KW - episodic T-bar test

KW - ring penetrometer test

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DO - 10.26182/89w4-xr29

M3 - Doctoral Thesis

ER -

Unlocking the changing strength of fine-grained soils in numerical analyses

Abstract

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