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Innovations and Practical Procedures for Hydraulic Model Applications in Bridge Scour Evaluations

by Jeffrey S. Glenn, Whitman & Howard Inc, Concord, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Procedures for data conversion, and establishment of downstream boundary conditions for a hydraulic computer model for estimation of riverbed scour at bridges are presented. The data conversion procedure involves an improved method from the current practice of taking the results of a field survey of the river reach and converting them for input into a hydraulic model. Field survey data are entered into coordinate geometry and computer aided drafting and design programs, cross sections are then generated, and converted into data files. A computer program called XY2WSPRO reads the data file and converts the X,Y data points into the G R card format of the hydraulic computer model, WSPRO. The simplified technique for establishing downstream boundary conditions for the hydraulic mode is for use in the absence of known calibration data. The trial-and -error method can be used to achieve consistent results form the hydraulic model at the point of interest, in this case, the bridge.

Subject Headings: Hydraulic models | Computer models | Hydrologic data | Scour | Hydraulic design | Computer aided design | Bridge abutments

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