Scour Development Around an Oblong Bridge Pier: A Numerical and Experimental Study

Bento, Ana Margarida; Pêgo, João Pedro; Viseu, Teresa; Couto, Lúcia

doi:10.3390/w15162867

Cited by 5 publications

(2 citation statements)

References 40 publications

(56 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is evident that nearly all the data points collapse to the perfect line, falling within the ±20% error range. The previous relevant studies [36,37] reported an average error of approximately 3% in their simulated scour results. Our results indicate a relatively larger average error of around 9%.…”

Section: Comparison With Experimental Resultsmentioning

confidence: 91%

Numerical Investigation of Flow and Scour around Complex Bridge Piers in Wind–Wave–Current Conditions

Yang,

Li,

Zou

et al. 2023

JMSE

View full text Add to dashboard Cite

A sea-crossing bridge is typically constructed in a marine environment with complex piers, and is susceptible to severe scour at the foundation. This study presents a numerical investigation on flow and scour around a complex pier, specifically focusing on a real-world sea-crossing bridge in China. A comprehensive CFD model incorporating hydrodynamic, free surface, sediment transport, and morphological models is employed for numerical modeling. Additionally, a wind shear stress model is considered to accurately simulate wind generation. The validation of the CFD model is achieved through comparison with experimental data of scour around a cylinder, demonstrating its capability to accurately replicate scour morphology and the temporal evolution of scour depth. Subsequently, the validated model is utilized for full-scale simulation of scour around the complex bridge pier under different wind, wave, and current conditions. The results indicate that compared to single piers with uniform cross-sectional shapes, flow patterns around complex piers are much more complicated. Scour predominantly occurs around the first row of group piles, while downstream piles experience less scour due to the sheltering effect from upstream piles. Furthermore, it becomes evident that the current exerts greater influence on pier scour than waves and wind, while the latter two factors primarily influence the superstructure of the bridge.

show abstract

Section: Comparison With Experimental Resultsmentioning

confidence: 91%

Numerical Investigation of Flow and Scour around Complex Bridge Piers in Wind–Wave–Current Conditions

Yang,

Li,

Zou

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

“…Ettema et al [28] presented a contemporary approach to scour-depth estimation, combining semiempirical formulation, advanced experimentation, and computational fluid dynamics (CFD), reflecting on the evolution of understanding complex pier flow fields over the past six decades and suggesting areas for further research to enhance design estimation of scour depth. Bento et al [29] numerically investigated the complex flow structure and sediment entrainment mechanisms around an oblong bridge pier using the Sediment Simulation in Intakes with Multiblock option (SSIIM) computational fluid dynamics (CFD) tool, aiming to accurately reproduce measured scour depths with an average relative error of less than 3%.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Turbulent Simulation of Bivariate Normal Distribution Protection Device

Liu,

Li,

Huang

et al. 2024

JMSE

View full text Add to dashboard Cite

In response to the deficiencies in existing bridge pier scour protection technologies, this paper introduces a novel protective device, namely a normal distribution-shaped surface (BND) protection devices formed by rotating a concave normal curve. A three-dimensional turbulent SST k − ω model is constructed, and physical model experiments of conical surfaces are conducted to validate the mathematical model. The simulation analyzes longitudinal water flow, downflow, vorticity intensity, and shear stress within normal and conical surfaces. The results show that the downflow distribution in front of the pier spans a relative water depth of (−0.45, 0.67), with a peak velocity approximately 70% of the longitudinal flow velocity. Circulation forms within the surfaces, with the main vortex flux inside the BND being 33% lower than that inside the conical surface. The maximum shear stress coefficient inside the BND can reach 9, and the protective surface isolates the bed from the flow to prevent scouring by high shear stress. The velocity gradient at the edge of the surface is small, and the edge shear stress of the 3D normal distribution-shaped surface (BND) protection device is only one-third of that of the conical surface, preventing edge scouring. The large shear stress and its distribution area decrease monotonically with the increase in surface width. When the surface width is four times the diameter, the distribution range of the shear stress coefficient greater than 1 is very small. The study of three-Dimensional turbulence within the BND provides a numerical basis for an anti-scour design.

show abstract

Hydrodynamic and morphologic investigating of the discrepancy in flow performance between inclined rectangular and oblong piers

Omara,

Elsayed,

Nassar

et al. 2023

Ocean Engineering

View full text Add to dashboard Cite

Scour Development Around an Oblong Bridge Pier: A Numerical and Experimental Study

Cited by 5 publications

References 40 publications

Numerical Investigation of Flow and Scour around Complex Bridge Piers in Wind–Wave–Current Conditions

Numerical Investigation of Flow and Scour around Complex Bridge Piers in Wind–Wave–Current Conditions

Three-Dimensional Turbulent Simulation of Bivariate Normal Distribution Protection Device

Hydrodynamic and morphologic investigating of the discrepancy in flow performance between inclined rectangular and oblong piers

Contact Info

Product

Resources

About