Evaluation of Bridge-Scour Research: Abutment and Contraction Scour Processes and Prediction (2011) / Chapter Skim
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Pages 68-71
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From page 68... ...
66 CHAPTER 7. RECOMMENDATIONS FOR DESIGN ESTIMATION OF ABUTMENT AND CONTRACTION SCOUR DEPTH From the foregoing discussion, it is apparent that none of the abutment scour or contraction scour formulas listed in Tables A-1 and B-1 satisfy fully the criteria specified in Section 5.4.
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From page 69... ...
67 depth in comparison to erodible abutment/embankment scour formulas that consider the flow relief associated with embankment failure. Unifying these formulas with an adjustment factor for erosion strength of the embankment would be a useful goal.
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From page 70... ...
68 factor related to floodplain width seems to be an ad hoc adjustment for the specialized data of Benedict (2003) that applies only to South Carolina.
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From page 71... ...
69 crucial to the success of any abutment scour formula. Furthermore, implementation of a computerized procedure as in ABSCOUR or HEC-RAS with controls on reasonable values of input parameters would be very helpful.
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