Three-Dimensional Model Analysis of Pier Scour Hydraulics: A Supplement to Experimental and Field Investigations
Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Abstract
A three-dimensional computational fluid dynamics (CFD) model is utilized to supplement experimental and field investigations for the evaluation of a new laboratory-based methodology developed to estimate the ultimate pier scour in cohesive soils. The method is applied to three bridge sites with different pier configurations. Due to the absence of real-life data on the flow field prevailing during the flood event that caused the scour, the model is used to reproduce such flow details around the bridge pier. In these simulations, the scour hole surveyed in the field at each site is employed in the model and the bottom shear stress distribution inside the hole is computed. The shear stress estimated by the new methodology from the scale model study is scaled up to the field scale and compared with the shear stress computed by the numerical model. The computed shear stress shows usefulness in evaluating the new methodology and assessing the ultimate condition of the pier scour.
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Copyright
© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Computer models
- Engineering fundamentals
- Field tests
- Hydraulic engineering
- Hydraulic models
- Hydraulic structures
- Hydraulics
- Models (by type)
- Piers
- Ports and harbors
- Scour
- Shear stress
- Stress (by type)
- Structural analysis
- Structural engineering
- Tests (by type)
- Three-dimensional analysis
- Three-dimensional models
- Water and water resources
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