Accession Number : ADA311030

Title :   A Comparison of the One-Dimensional Bridge Hydraulic Routines from HEC-RAS, HEC-2 and WSPRO.

Descriptive Note : Research rept.,

Corporate Author : HYDROLOGIC ENGINEERING CENTER DAVIS CA

Personal Author(s) : Brunner, Gary W. ; Hunt, John H.

PDF Url : ADA311030

Report Date : SEP 1995

Pagination or Media Count : 80

Abstract : The hydraulics of flow though bridges is an important aspect of computing water surface profiles. The computation of accurate water surface profiles though bridges is necessary in flood damage reduction studies, channel design and analysis, and stream stability and scour evaluations. There are several one-dimensional water surface profile computer programs available for performing this type of computation. The most widely used of these programs are HEC-2 (HEC, 1991) and WSPRO (FHWA, 1990). The Hydrologic Engineering Center (HEC) has recently released a new program for computing one-dimensional water surface profiles, called HEC-RAS (HEC, 1995). The purpose of this study was to evaluate the effectiveness of the new bridge hydraulics routines in HEC-RAS at sites with extensive observed data, and to compare HEC-RAS to HEC-2 and WSPRO, with respect to bridge modeling performance.

Descriptors :   *HYDRAULICS, *BRIDGES, PRESSURE GRADIENTS, COMPUTER PROGRAMS, MATHEMATICAL MODELS, WATER FLOW, ONE DIMENSIONAL, DAMAGE ASSESSMENT, ACCURACY, ENERGY TRANSFER, HYDROLOGY, SURFACE WATERS, CALIBRATION, BANKS(WATERWAYS), FLOODING, FRICTION, CHANNELS(WATERWAYS), STREAMFLOW ANALYSIS, FLOOD CONTROL, DOWNSTREAM FLOW, MOMENTUM TRANSFER, NONUNIFORM FLOW.

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE