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Scaling of Scour Depth at Bridge Pier Based on Characteristic Dimension of Large-Scale Vortex

Ocean College, Zhejiang University, Zhoushan 316021, China
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Water 2019, 11(12), 2458; https://doi.org/10.3390/w11122458
Received: 15 October 2019 / Revised: 11 November 2019 / Accepted: 21 November 2019 / Published: 22 November 2019
(This article belongs to the Section Hydraulics and Hydrodynamics)
By examining the variations in the dimensions of a horseshoe vortex system in front of a pier, the present study proposes a new length scale, called pier hydraulic radius, for the scaling of the maximum scour depth at a bridge pier. It is shown that, in comparison with other length scales, the pier hydraulic radius is more effective for quantifying combined effects of pier width and flow depth on the local scour for both low and high flow conditions. A theoretical formula is finally derived, which agrees well with experimental data reported in the literature. View Full-Text
Keywords: scaling analysis; length scale; bridge scour; horseshoe vortex; pier hydraulic radius scaling analysis; length scale; bridge scour; horseshoe vortex; pier hydraulic radius
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Cheng, N.-S.; Wei, M. Scaling of Scour Depth at Bridge Pier Based on Characteristic Dimension of Large-Scale Vortex. Water 2019, 11, 2458.

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