Influence of large-diameter pipe pile driving on surrounding marine soils and adjacent submarine pipelines

Dou, Jinzhong; Chen, Jin-Jian; Zhang, Zhongjie

doi:10.1080/1064119x.2019.1675205

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…The cap model, which is based on the idea of Drucker [34], is applied to capture the non-linear behavior of the soil constituent [10,32,35]. One of the major advantages of the cap model over other classical pressure-dependent plasticity models such as the Drucker-Prager and Mohr-Coulomb models is the ability to control the amount of dilatancy produced under shear loading.…”

Section: Soil Model Descriptionmentioning

confidence: 99%

“…However, the ALE or CEL method is limited to total stress analysis in commercially available software, and a user subroutine is needed to consider the pore water effect [26][27][28][29], which requires outstanding programming skills [30]. Given this situation, a hybrid Lagrangian-ALE approach, which combines the advantages of the Lagrangian and ALE or CEL approaches, comes into view [10,31,32]. This method is applied to simulate the undrained pile jacking in saturated fine-grained soil, which can not only solve the mesh distortion near the pile-soil interface, but also obtain the EPWP response of far field soil around pile.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on the Correlation between Soil Consolidation and Pile Set-Up Considering Pile Installation Effect

Dou

Chen

Liao

et al. 2021

JMSE

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In saturated fine-grained soil, the development and dissipation of excess pore water pressure (EPWP) during and after pile jacking change the effective stress of the surrounding soil, and thereby affect the pile set-up. In this paper, the entire process of steel-pipe pile jacking (the installation process and the subsequent consolidation phase) is simulated with three-dimensional (3D) finite element models, considering the pore water effect. After the model verification, a comprehensive numerical analysis was performed to investigate the development and dissipation of EPWP, changes in soil stress state, and the side shear resistance of pile with time after installation. On this basis, not only the influence of ks, cu, E, and OCR on EPWP generation during pile jacking and subsequent soil consolidation effect after pile installation but also the correlation between pile set-up and EPWP dissipation is investigated.

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Section: Soil Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on the Correlation between Soil Consolidation and Pile Set-Up Considering Pile Installation Effect

Dou

Chen

Liao

et al. 2021

JMSE

Self Cite

View full text Add to dashboard Cite

show abstract

“…This type of hazard usually causes injury or loss of life and imposes significant additional project costs for mitigating their effects [14][15][16]. In shallow water areas, piles are widely used as foundation for engineering structures [1,17,18]. To ensure the safety of design and operation of offshore structures with pile foundations, estimating the potential interaction force between submarine debris flows and a monopile is of great research significance and practical value for marine engineers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Interaction between Submarine Landslides and a Monopile Using CFD Techniques

Chen

Liao

2021

JMSE

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Offshore installations with pile foundations in shallow water are vulnerable to submarine landslides, which cause serious damage to engineering facilities, loss of life, and loss of money. Due to a shortage of real observation data and the difficulty of reproduction, we lack insight into the interaction behavior between submarine landslides and monopiles. This study capitalized on ANSYS Fluent 20.0 to develop a three-dimensional biphasic (water and slurry) numerical model. This CFD model was used to analyze the interaction between a monopile and submarine landslides at different flow heights. The velocities of submarine landslides were from low to high values. Two modes of interactional forces acting on the monopile are proposed, which are (i) interaction force with peak value and (ii) interaction force without peak value. The influence of flow height and velocity on interaction forces was investigated. Results show that the effect of the flow heights on the interaction force is significant at low velocity stage, while the peak force representing a hazard level of the pile was non-negligible under high flow velocity and low flow height conditions, which should be considered in a future study. The related mechanisms are revealed with a hybrid model considering different components of the force.

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Influence of Soil Plugging on Dynamic Soil Response During Simulated Pipe Pile Driving Model Test in Sands

Lin,

Lu,

Zhao

2024

Applied Sciences

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The squeezing effect and strike-induced vibration generated by pile driving pose a threat to adjacent structures. To mitigate the squeezing effect, open-ended pipe piles were implemented. However, this type of pile brings a degree of soil-plugging effect, particularly in sandy soil, which complicates the squeezing effect and the dynamic responses of the pile during pile driving. In this study, model experiments were conducted using both open-ended piles and open-ended piles with different fixed-length soil plugs to investigate the squeezing effect and dynamic responses of the piles. Moreover, spectrum analysis was performed to explore the patterns of vibration waves in the open-ended pipe pile during the striking process. For open-ended pipe piles, acceleration fluctuations were detectable solely when the pile reached the sensor depth and at the end of the pile driving process, which revealed that the hammering energy was mainly consumed by pile settlement and the formation of the soil plug. When the formation of the soil plug was completed, the majority of the energy was converted into propagating vibration, resulting in the emergence of another crest of acceleration. The spectrum analysis revealed that the maximum amplitude occurred when the penetration depth was equal to half of the pile length.

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Influence of large-diameter pipe pile driving on surrounding marine soils and adjacent submarine pipelines

Cited by 4 publications

References 37 publications

Study on the Correlation between Soil Consolidation and Pile Set-Up Considering Pile Installation Effect

Study on the Correlation between Soil Consolidation and Pile Set-Up Considering Pile Installation Effect

Numerical Study on Interaction between Submarine Landslides and a Monopile Using CFD Techniques

Influence of Soil Plugging on Dynamic Soil Response During Simulated Pipe Pile Driving Model Test in Sands

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