Centrifuge modelling and numerical analysis on suction caisson for offshore foundation systems

Kai Xiang Koh

doi:10.26182/5c3ff282897ac

Centrifuge modelling and numerical analysis on suction caisson for offshore foundation systems

Kai Xiang Koh

School of Engineering

Research output: Thesis › Doctoral Thesis

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Abstract

Suction caissons are used widely for anchoring floating facilities in deep waters, and as foundations for supporting wind turbin s in shallow water regions. The behaviour of a stiffened caisson anchor during installation, monotonic pullout and cyclic loading in lightly overconsolidated calcareous silt were firstly investigated through a series of centrifuge tests. Numerical simulations
of caisson installation and post-installation set-up were then carried out to determine a normalised dissipation time around caissons. The effectiveness of sand/gravel blanket to optimise the capacity of a caisson foundation subjected to monotonic and cyclic loadings in layered sand-clay-sand deposit was lastly explored through centrifuge tests.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Thesis sponsors	Australian Government Research Training Program
Award date	14 Dec 2018
DOIs	https://doi.org/10.26182/5c3ff282897ac
Publication status	Unpublished - 2018

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Koh, K. X. (2018). Centrifuge modelling and numerical analysis on suction caisson for offshore foundation systems. https://doi.org/10.26182/5c3ff282897ac

@phdthesis{90700f2622b547ec8841da52e316ac51,

title = "Centrifuge modelling and numerical analysis on suction caisson for offshore foundation systems",

abstract = "Suction caissons are used widely for anchoring floating facilities in deep waters, and as foundations for supporting wind turbin s in shallow water regions. The behaviour of a stiffened caisson anchor during installation, monotonic pullout and cyclic loading in lightly overconsolidated calcareous silt were firstly investigated through a series of centrifuge tests. Numerical simulations of caisson installation and post-installation set-up were then carried out to determine a normalised dissipation time around caissons. The effectiveness of sand/gravel blanket to optimise the capacity of a caisson foundation subjected to monotonic and cyclic loadings in layered sand-clay-sand deposit was lastly explored through centrifuge tests.",

keywords = "suction caisson, anchors, offshore foundation, numerical modelling, calcareous silt, centrifuge modelling",

author = "Koh, {Kai Xiang}",

year = "2018",

doi = "10.26182/5c3ff282897ac",

language = "English",

school = "The University of Western Australia",

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T1 - Centrifuge modelling and numerical analysis on suction caisson for offshore foundation systems

AU - Koh, Kai Xiang

PY - 2018

Y1 - 2018

N2 - Suction caissons are used widely for anchoring floating facilities in deep waters, and as foundations for supporting wind turbin s in shallow water regions. The behaviour of a stiffened caisson anchor during installation, monotonic pullout and cyclic loading in lightly overconsolidated calcareous silt were firstly investigated through a series of centrifuge tests. Numerical simulations of caisson installation and post-installation set-up were then carried out to determine a normalised dissipation time around caissons. The effectiveness of sand/gravel blanket to optimise the capacity of a caisson foundation subjected to monotonic and cyclic loadings in layered sand-clay-sand deposit was lastly explored through centrifuge tests.

AB - Suction caissons are used widely for anchoring floating facilities in deep waters, and as foundations for supporting wind turbin s in shallow water regions. The behaviour of a stiffened caisson anchor during installation, monotonic pullout and cyclic loading in lightly overconsolidated calcareous silt were firstly investigated through a series of centrifuge tests. Numerical simulations of caisson installation and post-installation set-up were then carried out to determine a normalised dissipation time around caissons. The effectiveness of sand/gravel blanket to optimise the capacity of a caisson foundation subjected to monotonic and cyclic loadings in layered sand-clay-sand deposit was lastly explored through centrifuge tests.

KW - suction caisson

KW - anchors

KW - offshore foundation

KW - numerical modelling

KW - calcareous silt

KW - centrifuge modelling

U2 - 10.26182/5c3ff282897ac

DO - 10.26182/5c3ff282897ac

M3 - Doctoral Thesis

ER -

Access to Document

10.26182/5c3ff282897ac

THESIS - DOCTOR OF PHILOSOPHY - KOH Kai Xiang - 2019
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