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Investigation of offshore landslides impact on bucket foundations using a coupled SPH–FEM method

Wang, Zehao ; Zheng, Defeng ; Guo, Xingsen ; Gu, Zhongde ; Shen, Yueqiang ; Nian, Tingkai

Geoenvironmental disasters, 2024-12, Vol.11 (1), p.2-15, Article 2 [Periódico revisado por pares]

Cham: Springer International Publishing

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Título:
Investigation of offshore landslides impact on bucket foundations using a coupled SPH–FEM method
Autor: Wang, Zehao ; Zheng, Defeng ; Guo, Xingsen ; Gu, Zhongde ; Shen, Yueqiang ; Nian, Tingkai
Assuntos: Bucket foundation ; Computer simulation ; Coupled SPH-FEM method ; Deformation ; Dynamic response ; Earth and Environmental Science ; Earth Sciences ; Environment ; Environmental Science and Engineering ; Finite element method ; Foundations ; Geoecology/Natural Processes ; Geography ; Hydrodynamics ; Impact analysis ; Impact effect ; Impact loads ; Information centres ; Landslides ; Landslides & mudslides ; Marine resources ; Mathematical models ; Mechanical analysis ; Natural Hazards ; Offshore ; Offshore landslide ; Reliability engineering ; Smooth particle hydrodynamics ; Submarine pipelines ; Underwater data center ; Underwater pipelines ; Underwater structures
É parte de: Geoenvironmental disasters, 2024-12, Vol.11 (1), p.2-15, Article 2
Descrição: Background As the exploitation of marine resources intensifies, the impact of submarine landslides on underwater structures has become a significant issue. Existing research primarily focuses on the impact on pipelines, often neglecting the actual deformation and mechanical response of underwater structures under impact loads in numerical simulations, thus complicating the evaluation of the reliability of these engineering structures in extreme conditions. Moreover, the dynamic response of bucket foundations, a common form of underwater base, under the effect of submarine landslide impacts remains unclear. Methods To address this knowledge gap, we have developed a fluid-structure coupling system that employs the coupled Smoothed Particle Hydrodynamics (SPH)-Finite Element Method (FEM) to investigate a single impact process and analyze the displacement response of bucket foundations within a water-offshore landslide-bucket foundationsubgrade context. The accuracy of this developed method has been systematically verified through comparisons with previous experimental and numerical results. Results During a submarine landslide impact event, the impact force demonstrates a distinct decrease followed by stabilization, and the displacement response of the bucket foundation exhibits a rebound effect after reaching its maximum value. Furthermore, we conducted an extensive analysis of different impact angles for underwater data centers equipped with multi-bucket foundations. Our study revealed that group-bucket foundations experience a combined translation-turnover failure when subjected to submarine landslide impacts, and the most unfavorable scenario for such impact is identified. The research introduces a novel numerical simulation approach for investigating the impact of submarine landslides on complex underwater structures.
Editor: Cham: Springer International Publishing
Idioma: Inglês

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Investigation of offshore landslides impact on bucket foundations using a coupled SPH–FEM method

Wang, Zehao ; Zheng, Defeng ; Guo, Xingsen ; Gu, Zhongde ; Shen, Yueqiang ; Nian, Tingkai

Cham: Springer International Publishing

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