Local scour around the monopile: A microscopic perspective using CFD-DEM

Zheng, Ziying; Hu, Zheng; Xie, Xingguo; Huang, Wei

doi:10.1016/j.oceaneng.2024.117318

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2024

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Cited by 3 publications

References 65 publications

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Investigation of the energy loss in cylindrical bridge piers scour depth prediction on sand-bed

Guo,

Weng,

2024

Ocean Engineering

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Investigation of the energy loss in cylindrical bridge piers scour depth prediction on sand-bed

Guo,

Weng,

2024

Ocean Engineering

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A meshless model for three-dimensional direct numerical simulation of local scour around cylinder bridge foundation

Zhang,

Xiong,

Gao

2024

Ocean Engineering

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Study on Scour Characteristics of a Shallow Foundation Bridge

Fan,

Li,

Wang

et al. 2024

Preprint

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Bridges with shallow foundations are highly susceptible to flood scouring due to their limited embedment depth and small contact area between the soil and foundation. This can lead to foundation voids, posing a serious threat to bridge safety. To prevent and mitigate scouring risks, this paper investigates the riverbed scouring characteristics of shallow foundation bridges under different hydrological conditions.The study found that under high water levels and flow velocities, scour depth significantly increased.Under extreme hydrological conditions, a horseshoe vortex forms at the base of the front end of the bridge pier, causing scour pits on both sides of the upstream face of the foundation, which is the main cause of foundation voids that first appear at 2580 seconds with a maximum scour depth of -2.51 meters and a void area of 0.5%, continuing to increase over time.Based on simulated scouring data, this study proposes a method for converting boundary conditions from a scouring model to a mechanical model. This method utilizes point cloud reverse engineering technology to generate a riverbed surface from the three-dimensional coordinate matrix of the boundary and import it into the structural analysis field. Hydraulic effects are calculated using a CFD model and transferred to the structural domain through fluid-structure interaction technology, achieving multi-physical field coupling among water flow, soil, and structure. This method addresses the current limitations in simulating complex scouring forms in bridge flood damage research, providing reliable technical support for subsequent studies on the damage behavior of shallow foundation bridges under flood scouring conditions.

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Local scour around the monopile: A microscopic perspective using CFD-DEM

Cited by 3 publications

References 65 publications

Investigation of the energy loss in cylindrical bridge piers scour depth prediction on sand-bed

Investigation of the energy loss in cylindrical bridge piers scour depth prediction on sand-bed

A meshless model for three-dimensional direct numerical simulation of local scour around cylinder bridge foundation

Study on Scour Characteristics of a Shallow Foundation Bridge

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