Effective stress analysis of residual wave-induced liquefaction around caisson-foundations: Bearing capacity degradation and an AI-based framework for predicting settlement

Moghaddam, Amir; Barari, Amin; Farahani, Sina; Tabarsa, Alireza; Jeng, Dong‐Sheng

doi:10.1016/j.compgeo.2023.105364

Cited by 5 publications

(1 citation statement)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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. Recently, Moghaddam et al [41] employed the CycliqCPSP soil model alongside Biot's consolidation and linear wave theories to investigate wave-induced liquefaction around suction caissons. However, the aforementioned studies predominantly concentrated on the stability of suction caissons under pull=out cyclic loading conditions, with a notable omission of wave conditions that significantly influence the seabed surrounding these structures.…”

Section: Introductionmentioning

confidence: 99%

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

Ma,

Zhao,

Jeng

2024

JMSE

Self Cite

View full text Add to dashboard Cite

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).

show abstract

Section: Introductionmentioning

confidence: 99%