Details:

Creators:
Parr, A David ; Milburn, Shannon ; Malone, Travis R ; Bender, Theodore
Parr, A David ; Milburn, Shannon ; Malone, Travis R ; Bender, Theodore Less -
Corporate Contributors:
Kansas. Dept. of Transportation. Bureau of Materials & Research ; University of Kansas. Dept. of Civil, Environmental and Architectural Engineering ; K-TRAN (Research program)
Kansas. Dept. of Transportation. Bureau of Materials & Research ; University of Kansas. Dept. of Civil, Environmental and Architectural Engineering ; K-TRAN (Research program) Less -
Subject/TRT Terms:
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Bridge Hydraulics Bridges Computer Programs Evaluation Foundations And Piers Hydraulic Engineering Hydraulic Structures Hydrologic Models Structural Engineering Tailwater Bridge Design Bridge Engineering Computer Models Computer Program Documentation Flow Hydraulics Overflows
Publication/ Report Number:
K-TRAN: KU-03-4R
Resource Type:
Tech Report
Geographical Coverage:
Kansas
OCLC Number:
662453045
Edition:
Revised Final Report; July 2002 - June 2010; 2nd ed.
Corporate Publisher:
Kansas. Dept. of Transportation. Bureau of Materials & Research
NTL Classification:
NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATIONNTL-HIGHWAY/ROAD TRANSPORTATION-DesignNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance
Abstract:
Most flood studies in the United States use the Army Corps of Engineers HEC-RAS (Hydrologic Engineering

Center’s River Analysis System) computer program. This study was carried out to compare results of HEC-RAS

bridge modeling with laboratory experiments. A laboratory flume was constructed specifically for this purpose. Nine

experiments were performed for each bridge type for a range of flow and tailwater conditions.

This report is the second edition. The first edition of the report considered the laboratory model to be distorted

with 1:100 horizontal scale and 1:20 vertical scale. The second edition considers both distorted and undistorted

interpretations of the laboratory models. Moreover, more advanced HEC-RAS modeling techniques are used to

better match the HEC-RAS and the laboratory results.

HEC-RAS models were developed for the assumption of a distorted laboratory model and for the assumption

of an undistorted laboratory model. The results were very close for the distorted and undistorted HEC-RAS models.

The maximum difference in computed water surface elevation was about 2 percent (0.28 ft in prototype dimensions)

at the downstream bounding cross section.

Overall, HEC-RAS did very well in matching the laboratory results as long as the Froude number did not exceed

0.7 at the downstream bounding cross section. When the Froude number exceeded 0.7 at the downstream bounding

cross section, the laboratory results still showed the effect of tailwater condition but the HEC-RAS models did not.


Format:
PDF
Alternate URL:
http://ntl.bts.gov/lib/34000/34000/34019/KU034R_Final.pdf
Funding:
C1357
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:35fbc35c9061ea19c4e7d0f24efe967ab7e392854dcfc2eca3219010995a202a
Download URL:
https://rosap.ntl.bts.gov/view/dot/18231/dot_18231_DS1.pdf
File Type:

Supporting Files

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