Effect of sitting time on the breakout force of mat foundation on soft marine clay seabed

Zhang, Qi; Fang, Tianyi; Ye, Guanlin; Liu, Guojun; Wang, Rong; Tian, Yinghui

doi:10.1016/j.oceaneng.2021.108770

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…In that respect, the present analysis is based on the model developed by Foda, 27 which is supported by strong theoretical framework, validation, and acceptance. [31][32][33][34][35][36][37] Since the original work was formulated for axisymmetric and two-dimensional anchors under plane strain conditions, the applicability of the approach will be extended herein to rectangular anchor configuration. This section starts by providing a brief overview of the formulation originally proposed by Foda 27 and related to estimate 𝐹 𝑝 for both circular and rectangular anchors.…”

Section: Suction Modelmentioning

confidence: 99%

“…The effectiveness of the kinematic approach in the context of effective stress analysis described in the preceding section relies on the ability to evaluate the suction forces magnitude

{F_p}

. In that respect, the present analysis is based on the model developed by Foda, 27 which is supported by strong theoretical framework, validation, and acceptance 31–37 . Since the original work was formulated for axisymmetric and two‐dimensional anchors under plane strain conditions, the applicability of the approach will be extended herein to rectangular anchor configuration.…”

Section: Suction Modelmentioning

confidence: 99%

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A limit analysis approach to uplift bearing capacity of shallow plate anchors in marine environments

Forcelini,

Maghous,

Schnaid

2023

Num Anal Meth Geomechanics

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Offshore oil and gas exploration activities involve the installation of various subsea infrastructures on the ocean floor, often supported by shallow foundations such as anchor plates or mudmats. These foundations must be designed to withstand applied service loads along the structure lifecycle, including decommissioning loads required for subsequent removal. In this context, this work is dedicated to the evaluation of uplift bearing capacity of shallow anchors within the theoretical framework of limit analysis and its related kinematic approach. Based on the implementation of 3D failure mechanisms, rigorous upper bound estimates for the uplift force viewed as ultimate load for the material system are derived from either total or effective stress analyses. In that respect, emphasis is given to the formulation of limit analysis problem in the context of effective stresses, showing how the effect of seepage flow may be accounted for by means of driving body forces derived from the gradient of excess pore pressure distribution and how suction forces arise from pore pressure difference between upper and lower anchor surfaces. Evaluation of suction forces developed during anchor lifting is addressed by resorting to a simplified modeling applied to circular and rectangular anchors. The accuracy of the upper bound predictions derived for uplift force is assessed by comparison with available experimental data. Several numerical results are also provided to investigate the effects of relevant problem parameters on the uplift bearing capacity.

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Section: Suction Modelmentioning

confidence: 99%

“…The effectiveness of the kinematic approach in the context of effective stress analysis described in the preceding section relies on the ability to evaluate the suction forces magnitude