Scour at Wide Piers and Long Skewed Piers (2011) / Chapter Skim
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Because of these limitations, the current methods generally overpredict local scour at such piers, leading to the use of unwarranted and costly foundations or countermeasures. Research was needed to evaluate current methods for predicting local pier scour and their applicability to wide piers and long skewed piers and to develop improved methods for highway agencies to use in the design, operation, and maintenance of highway bridges.
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From page 2... ...
All of these data are for single, simple shaped piers founded in cohesionless sediments and subjected to constant-in-time flow velocities. Only one completed local scour field study, where scour evolution rates and the associated flow parameters were measured, was obtained.
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From page 3... ...
The recommended equilibrium scour depth equation, the best-performing scour evolution equation, and the method to account for flow skew angle are presented in this report.
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