Numerical modelling of transient cyclic vertical loading of suction caissons in sand

Cerfontaine, Benjamin; Collin, Frèdèric; Charlier, Robert

doi:10.1680/jgeot.15.p.061

Cited by 23 publications

(5 citation statements)

References 44 publications

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“…The values of c 12 in the literature vary significantly depending on the type of soils and problems investigated. For example, Cerfontaine et al 28 used 1 m/(kPa•s) for sand, while Hu et al 29 used 1.28 ×10 −10 m/(kPa•s) for leachate flow in waste fills. In the following simulation, a value of c 12 = 1×10 −9 m/(kPa•s) was adopted by calibrating against the tests in Figure 1.…”

Section: Discussion Of the Interface Parametersmentioning

confidence: 99%

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

Peng

Tian

Gaudin

et al. 2022

Num Anal Meth Geomechanics

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This paper presents the detailed formulation of a coupled hydro-mechanical structure-soil interface and demonstrates its application in simulating uplifting problems. This interface features real-time prediction of the pore pressure generation and structure-soil separation, and thus rate dependency and 'breakaway' can be modeled without user intervention. Constitutive relations of this interface were derived by considering the coupling between soil skeleton and fluid along the interface. A complete finite element formulation and numerical implementation of the interface is provided based on an eight-node element.The performance of this interface is demonstrated by simulating lifting a surface footing at varying rates (spanning across undrained, partially drained and drained conditions), compared with existing theoretical solutions, numerical results and experimental data. The good agreement achieved indicates that this interface is capable of modelling uplift at varying rates, which is an extremely challenging topic in offshore engineering. Sensitivity studies were conducted to investigate the parameters affecting uplifting behaviour. A unified backbone curve was established correspondingly, which is shown to be different from existing studies in compression, due to the difference in the mechanism between the two cases.

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Section: Discussion Of the Interface Parametersmentioning

confidence: 99%

“…The values of c 12 in the literature vary significantly depending on the type of soils and problems investigated. For example, Cerfontaine et al 28 . used 1 m/(kPa∙s) for sand, while Hu et al 29 .…”

Section: Discussion Of the Interface Parametersmentioning

confidence: 99%

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

Peng

Tian

Gaudin

et al. 2022

Num Anal Meth Geomechanics

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“…It is validated against results published in the literature for three different materials. Contrary to rock materials, different models exist for the cyclic behaviour of sands such as the Prevost model (Prevost, 1985;Cerfontaine et al, 2015), generalised plasticity (Mira et al, 2009) or subloading surface (Hashiguchi, 2009). The formulation proposed hereinafter is based on the bounding surface plasticity (Dafalias, 1986), the pioneering work on its application in form a two surface plasticity model for sands (Manzari & Dafalias, 1997) which was later extended further (Dafalias & Manzari, 2004;Taiebat & Dafalias, 2008;Li & Dafalias, 2012;Dafalias & Taiebat, 2016) and adopted the title of SANISAND, an acronym term for Simple ANIsotropic SAND.…”

Section: List Of Symbols αmentioning

confidence: 99%

Validation of a New Elastoplastic Constitutive Model Dedicated to the Cyclic Behaviour of Brittle Rock Materials

et al. 2017

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Old mines or caverns may be used as reservoirs for fuel/gas storage or in the context of large scale energy storage. In the first case, oil or gas is stored on annual basis. In the second case pressure due to water or compressed air varies on a daily basis or even faster. In both cases a cyclic loading on the cavern's/mine's walls must be considered for the design. The complexity of rockwork geometries or coupling with water flow requires finite element modelling and then a suitable constitutive law for the rock behaviour modelling. This paper presents and validates the formulation of a new constitutive law able to represent the inherently cyclic behaviour of rocks at low confinement. The main features of the behaviour evidenced by experiments in the literature depict a progressive degradation and strain of the material with the number of cycles. A constitutive law based on a boundary surface concept is developed. It represents the brittle failure of the material as well as its progressive degradation. Kinematic hardening of the yield surface allows the modelling of cycles. Isotropic softening on the cohesion variable leads to the progressive degradation of the rock strength. A limit surface is introduced and has a lower opening than the bounding surface. This surface describes the peak strength of the material and allows the modelling of a brittle behaviour. In addition a fatigue limit is introduced such that no cohesion degradation occurs if the stress state lies inside this surface. The model is validated against three different rock materials and types of experi-

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“…For instance, Thieken et al [38] presented numerical simulations of a suction caisson, focusing on coupled pore fluid diffusion under fluctuating tension conditions in sandy terrain. Shortly thereafter, Cerfontaine et al [39] applied the Prevost elastic-plastic model to explore the monotonic and cyclic behaviors of suction caissons under vertical transient loading. Shen et al [40] proposed a numerical model to predict the oscillation and accumulations of pore pressures around the suction anchor under the influence of long-term vertical cyclic load variations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Composite Load-Induced Seabed Response around a Suction Anchor

Ma,

Zhao,

Jeng

2024

JMSE

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Suction anchors play a crucial role as marine supporting infrastructure within mooring systems. In engineering practice, the composite load comprising nonlinear waves and cyclic pull-out loads can have adverse effects on the seabed soil, posing a threat to the pull-out bearing capacity of the suction anchor. While existing research predominantly focuses on cyclic pull-out loads, the influence of nonlinear wave actions at the seabed surface remains overlooked. This study employs a two-dimensional integrated numerical model to investigate the dynamic soil response around a suction anchor under the influence of both nonlinear waves and cyclic pull-out loads, focusing on the mechanisms that lead to liquefaction and the deterioration of the interfacial friction due to the excess pore pressure buildup. The numerical results reveal that the cyclic pull-out load is the primary factor in the deterioration of the frictional resistance at the suction–soil interface, especially when the pull-out load is inclined with the suction anchor. Parametric studies indicate that the relative difference in frictional resistance deterioration between cases considering and excluding surface water waves becomes more pronounced in soils characterized by a small consolidation coefficient (Cv) and relative density (Dr).

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Numerical modelling of transient cyclic vertical loading of suction caissons in sand

Cited by 23 publications

References 44 publications

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

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

Validation of a New Elastoplastic Constitutive Model Dedicated to the Cyclic Behaviour of Brittle Rock Materials

Numerical Modeling of Composite Load-Induced Seabed Response around a Suction Anchor

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