The effect of upstream T-shaped spur dike on reducing the amount of scouring around downstream bridge pier located at a 180° sharp bend

Vaghefi, Mohammad; Solati, Saman; Chooplou, Chonoor Abdi

doi:10.1080/15715124.2020.1776306

Cited by 10 publications

(1 citation statement)

References 27 publications

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“…Aamir and Ahmad [27] investigated the flow characteristics of 2D horizontal jets and subsequent scour, and analyzed the effect of roughness of stiff apron on such characteristics. Studies have also been carried out to study the flow pattern and scour around other hydraulic structures [28][29][30][31][32][33]. It is quite evident that the primary emphasis of investigation has been the examination of flow characteristics and derivation of empirical equations for different After pioneering investigations by Rouse [1], a number of researchers have investigated scour due to wall jets [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rough Rigid Apron on Scour Downstream of Sluice Gates

Aamir

Ahmad

Pandey

et al. 2022

Water

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Presented in this paper is an experimental study on scour downstream of rough and smooth stiff aprons under the influence of wall jets. The effect of various parameters on asymptotic scour depth is studied. The analysis of data reveals that maximum scour depth reduces with increasing sediment size, sluice opening, and apron length. It is directly proportional to densimetric Froude number. Maximum equilibrium scour depth initially decreases with increasing tailwater level (up to a minimum), but thereafter an increase is observed. The effect of roughness of stiff apron on scour is studied and quantification of decline in maximum scour depth due to roughness is carried out. Scour profiles and their temporal variation are also studied. A regression-based equation to predict equilibrium scour depth under smooth and rough apron is proposed, which conforms to experimental data. Based on the conclusions of this study, it is recommended to use roughness over the surface of stiff apron to confine scour under-wall jets.

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