Journal article
A multi-parameter design formula for riprap size selection at wing-wall abutments
Journal of hydraulic research, Vol.59(4), pp.651-661
07/04/2021
DOI: 10.1080/00221686.2020.1818310
Abstract
A numerically-based approach is used to obtain a size selection formula for the riprap stone part of the apron used to protect wing-wall abutments against erosion. Several series of simulations with a given mean riprap diameter are conducted to estimate the maximum bed shear stress over the riprap apron and then the maximum (critical) Froude number at which riprap stones will resist shear failure by the flow for cases where the abutment is placed in straight and curved channels with or without a floodplain. Simulation results show that some of the existing design formulas for wing-wall abutments placed in straight river channels are not conservative enough for relatively large floodplain widths. Using data from the numerical simulations, a modified, two parameter design formula for riprap size selection is proposed that explicitly incorporates the effects of bank curvature and floodplain width.
Details
- Title: Subtitle
- A multi-parameter design formula for riprap size selection at wing-wall abutments
- Creators
- Hao Wu - University of IowaJie Zeng - South Florida Water Management DistrictGeorge Constantinescu - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of hydraulic research, Vol.59(4), pp.651-661
- Publisher
- Taylor & Francis
- DOI
- 10.1080/00221686.2020.1818310
- ISSN
- 0022-1686
- eISSN
- 1814-2079
- Grant note
- DOI: 10.13039/100013667, name: Mid-America Transportation Center; DOI: 10.13039/100013667, name: University of Nebraska-Lincoln, award: 15243500
- Language
- English
- Date published
- 07/04/2021
- Academic Unit
- IIHR--Hydroscience and Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984197187002771
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