Effects of Ice Cover on Local Scour Around Bridge Piers—An Experimental Study

Local scour around piers is one of the primary causes of collapse of bridges that cross rivers. The most severe scouring occurs in cold regions where ice cover significantly changes the velocity profile. Having an accurate estimation of the maximum scour depth around bridge piers, especially in cold regions, is necessary for a safer design of piers. In this study, 3-D numerical models are compared to laboratory experiments to examine the process of local scour around bridge piers with and without smooth and rough ice cover. By using the equation of Meyer-Peter Müller, the sediment transport model is validated to approximate the transport of the sediment particles. Numerical results showed good agreements with experimental observations where the maximum scour depth and Turbulent Kinetic Energy (TKE) around bridge piers were the highest under rough ice cover conditions.

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A revisit of the local scour around bridge piers under an ice-covered flow condition—An experimental study

Journal of Hydrodynamics ◽

10.1007/s42241-021-0082-0 ◽

2021 ◽

Vol 33 (5) ◽

pp. 928-937

Author(s):

Jun Wang ◽

Kui Wang ◽

Bi-he Fang ◽

Jueyi Sui

Keyword(s):

Experimental Study ◽

Flow Condition ◽

Local Scour ◽

Bridge Piers

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Experimental study on local scour at complex bridge piers under steady currents with bed-form migration

Ocean Engineering ◽

10.1016/j.oceaneng.2021.109329 ◽

2021 ◽

Vol 234 ◽

pp. 109329

Author(s):

Yifan Yang ◽

Bruce W. Melville ◽

Graham H. Macky ◽

Asaad Y. Shamseldin

Keyword(s):

Experimental Study ◽

Local Scour ◽

Bridge Piers ◽

Bed Form

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Reduction of scouring depth by using inclined piers

Canadian Journal of Civil Engineering ◽

10.1139/l10-099 ◽

2010 ◽

Vol 37 (12) ◽

pp. 1621-1630 ◽

Cited By ~ 9

Author(s):

Zafer Bozkus ◽

Murat Çeşme

Keyword(s):

Experimental Study ◽

Dimensional Analysis ◽

Local Scour ◽

Bridge Piers ◽

Scour Depth ◽

Regression Analyses ◽

Clear Water ◽

Design Engineers ◽

Water Conditions ◽

Scouring Depth

The aim of this experimental study is to examine the effect of inclination of dual bridge piers on scour depth under clear-water conditions for various uniform flow depths. Duration of 4 h was used in the experiments for each run. Scour depths were measured at four different points around the piers. The depths of local scour around inclined piers were found to be substantially smaller than the scour depths around vertical piers. Dimensional and nondimensional curves were developed and presented to show the variation of scour depth with relevant parameters obtained in the dimensional analysis. Results of the study were compared to those obtained from a similar study performed with single inclined piers to see the effect of the second pier on scour depths. Useful equations for the design engineers were developed based on multiple regression analyses, to be used for predicting local scour depths around vertical and (or) inclined piers in uniform and (or) nonuniform sediments. Normalized scour depths measured around the vertical piers in the present study were compared with those computed by an equation suggested by Melville and Sutherland (1988), and also by an equation developed in the present study.

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