Computer Determination of Flow through Bridges

by Bill S. Eichert, (M.ASCE), Asst. Dir.; Hydro. Engrg. Ctr., U.S. Army Corps of Engrs., Davis, CA,
John Peters, (A.M.ASCE), Hydr. Engr.; Hydro. Engrg. Ctr., U.S. Army Corps of Engrs., Davis, CA,


Serial Information: Journal of the Hydraulics Division, 1970, Vol. 96, Issue 7, Pg. 1455-1468


Document Type: Journal Paper

Discussion: Posey Chesley J. (See full record)
Closure: (See full record)

Abstract: Techniques used for the computer determination of water surface profiles through bridge structures of various shapes and sizes, including culverts under high fills, are presented. The techniques are incorporated in the Hydrologic Engineering Center Program on Water Surface Profiles. Theoretical aspects of procedures for low flow-through bridges using momentum principles are described in detail for both supercritical and subcritical flow. Methods for determining the controlling type of flow (low flow, pressure flow, weir flow, or various combinations of these) and corresponding changes in water surface elevation, are described and illustrated. Stress is placed on the need for additional research and field data to evaluate the accuracy of various techniques that are suited to computer determination of water surface profiles through bridges. Limitations of the procedures are described.

Subject Headings: Flow profiles | Flow control | Pressurized flow | Water flow | Computing in civil engineering | Water surface profiles | Bridges | Low flow

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