Lifting Objects Off the Seabed

Grant number: DP190103315 | Funding period: 2019 - 2021

Completed

Abstract

This project aims to investigate the process of lifting objects off the seabed. Understanding this breakout process is the scientific basis for a variety of offshore applications such as oil and gas decommissioning, marine salvage and securing foundations under extreme storms. This project expects to advance the understanding of soil-fluid-structure interactions of this problem using innovative high-speed photography observations and advanced numerical coupled analyses. Outcomes will include a numerical tool, verified against a high quality experimental database, to predict the breakout process and uplift required for pressing offshore challenges. The ability for Australia’s engineers to pre..

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Related publications (9)

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Experimental Study on the Behavior of Bucket Foundations under Sustained Uplift Loading

S Mei, Y Tian, MJ Cassidy, C O’Loughlin

2026-04-01

Bucket foundations can be subjected to uplift loads caused by factors such as wind and wave action on the structure, loop currents..

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Numerical Investigation of the Capacity of Anchor Chain Links in Clay

W Liu, Y Tian, MJ Cassidy, C O'Loughlin, P Watson

2024-10-01

Offshore floating systems are held in position with chains that connect the floater to anchors embedded in the seabed. An essentia..

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Investigations into the Uplift of Skirted Foundations on Clay at Varying Rates

M Peng, Y Tian, C Gaudin

2024-02-01

This paper presents finite-element simulations to reinterpret a series of full-model and particle image velocimetry (PIV) (half mo..

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Envelopes for the soil-resistance capacity of a shallowly embedded pipeline in clay under three-dimensional combined loadings

Y Tian, T Zhou, MJ Cassidy, L Wang

2023-03-01

Envelopes are developed for the soil-resistance capacity of pipelines shallowly embedded in clay subjected to combined three-dimen..

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Application of a coupled hydro-mechanical interface model in simulating uplifting problems

M Peng, Y Tian, C Gaudin, L Zhang, D Sheng

2022-12-10

This paper presents the detailed formulation of a coupled hydro-mechanical structure-soil interface and demonstrates its applicati..

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Coupled hydro-mechanical interfaces to enable uplift modelling in offshore engineering

Y Tian, J Ren, T Zhou, M Peng, MJ Cassidy

2022-02-01

In many fields of geotechnical engineering, the numerical modelling of structure-soil interaction remains a fundamental but challe..

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An interface to numerically model undrained soil-structure interactions

W Liu, Y Tian, MJ Cassidy

2021-10-01

The traditional Coulomb friction model is commonly used to illustrate interactions at the soil-structure interface, but it assumes..

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Improving force resultant model for anchors in clays from large deformation finite element analysis

Yinghui Tian, Mark J Cassidy, Christophe Gaudin, Maozhu Peng

2019-11-26

This paper presents an improved plasticity force-resultant model for anchors deeply embedded in clays, developed from large deform..

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Optimising the dimensions of Suction Embedded Anchors by investigating the opening mechanism

Yinghui Tian, Mark J Cassidy, Wenlong Liu

2019-07-01

This paper aims to optimise the dimensions of Suction Embedded Anchors (SEAs) by investigating the opening mechanism through numer..

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