Numerical Simulation of Suction Bucket Under Vertical Tension Loading

Shen, Kanmin; Zhang, Y; Klinkvort, Rasmus Tofte; Sturm, Hendrik; Jostad, HP; Sivasithamparam, Nallathamby; Guo, Zhansheng

doi:10.3723/osig17.488

Cited by 7 publications

(9 citation statements)

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“…Theoretical solutions and procedures for estimating the pullout capacity of skirted foundations in sand are proposed by Houlsby et al (2005), Senders (2008), Lehane et al (2014) and Sawicki et al (2016). Numerical analyses have been performed by Rahman et al (2001), Zhou et al (2008), Mana et al (2014), Thieken et al (2014), and Shen et al (2017). A recent experimental study in a centrifuge is presented in (Wang et al 2019), and pullout capacities measured in 1g model tests are reported by Fig.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift

Kulczykowski

2020

Archives of Hydro-Engineering and Environmental Mechanics

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This paper reports results from 1g model tests carried out under single gravity on a skirted foundation installed in sand and subjected to a rapid uplifting force. The effects of displacement rates ranging from 5 mm/s to 450 mm/s on the ultimate capacity, suction pressure inside the skirt compartment, and time of extraction were investigated. Test results indicate that the displacement rate significantly affected the magnitude of uplift resistance, as well as the magnitude of suction under the foundation lid, but had little effect on the relationship between stress and the displacement of the foundation. The shapes of the uplift capacity-displacement curve and the suction-displacement curve were similar for all experimental displacement rates.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift

Kulczykowski

2020

Archives of Hydro-Engineering and Environmental Mechanics

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“…(1)). Other studies have tried scaling the CSL intercept using shape functions dependent on Lode angle (Shen et al 2017). However, a series of later developments on this topic (Li and Dafalias 2012;Jefferies and Been 2016) have confirmed the uniqueness of the CSL.…”

Section: Key Features Of the Constitutive Modelmentioning

confidence: 99%

Use of a bounding surface model in predicting element tests and capacity in boundary value problems

et al. 2021

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The paper examines the merit of a two surface plasticity model through an optimised calibration procedure and assesses the model performance in capturing the response at both element and system level. The governing equations are based essentially on the parent two surface plasticity model developed by Dafalias and Manzari (2004) with some simple yet practical changes to enable realistic predictions for monotonic loading along different load paths. This is achieved by scaling the influence of state parameter based on a normalised measure of anisotropy, thus leading to suitable change in dilatancy and plastic modulus for different loading directions. The paper presents a simple optimisation technique for calibrating the model parameters, providing an objective approach to reduce the uncertainties in parameter determination that leads to good agreement with responses measured in drained and undrained triaxial tests. The model has also been implemented for the boundary value problem of a buried circular plate anchor and a surface circular footing. Comparisons of the simulated responses with those measured in centrifuge tests demonstrate the potential of the model, whilst also pointing to the challenges in capturing the global response at all strain levels, even for rather simple boundary value problems.

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“…In numerical simulations, scholars often model soil as elastic-plastic materials, such as Duncan-Chang, Tresca, or Mises, and conduct load analysis for suction bucket foundations [17,18]. In their study, Shen et al [19] used a bounding surface model to analyze the response of buckets to vertical pullout loads. They conducted a parameter study to investigate the influence of the pullout rate on the tension load-displacement curve.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Offshore Suction Bucket Foundation Pullout Characteristics under Undrained Conditions

Chen,

Lai

et al. 2024

JMSE

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The suction bucket jacket foundation is widely regarded as a crucial solution for constructing offshore wind farms in water depths ranging from 30 m to 50 m. When subjected to complex loads, the bucket primarily relies on vertical movement to withstand the corresponding loads. This paper investigates the undrained pullout characteristics of the bucket foundation through numerical simulation while keeping its weight constant. This study examined how the pullout capacity of the suction bucket jacket foundation is affected by the aspect ratio and soil conditions. It revealed the changing patterns of bucket–soil frictional resistance and suction during the undrained pullout process, along with their contributions to the pullout capacity of the foundation. The results indicate that the peak pullout load of the bucket increases with decreasing L/D, and the response is more pronounced in soft clay. The frictional resistance changes from upward to downward with increasing displacement, with the maximum frictional resistance occurring at the base of the foundation. The lower part of the footing has a faster response. The suction force increases with displacement, and the proportion of suction force to peak pullout tends to increase as L/D decreases. The soil failure displacement corresponding to the occurrence of the peak pullout load of the foundation lags behind the displacement at which the frictional resistance of the bucket wall stabilizes.

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Numerical Simulation of Suction Bucket Under Vertical Tension Loading

Cited by 7 publications

References 0 publications

Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift

Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift

Use of a bounding surface model in predicting element tests and capacity in boundary value problems

Numerical Simulation of Offshore Suction Bucket Foundation Pullout Characteristics under Undrained Conditions

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