Energy Dissipation Optimization for Circular Culverts

In 2004, Nebraska Department of Transportation (NDOT) research examined the use of weir energy dissipators for rectangular culverts. The method has proven valuable and effective for minimizing velocities and decreasing cost and has been included in the Federal Highway Administration's (FHWA's) Hydraulic Engineering Circular No. 14: Hydraulic Design of Energy Dissipators for Culverts and Channels. NDOT has already installed similar dissipators (including weir and staggered weir wall dissipators) downstream of circular culverts, but there is no formal design procedure for this application. Although NDOT Roadway Hydraulics has developed methods of analysis for the new application, they do not have any guidance on the validity of the analysis method because no specific research has been conducted. The current method of analysis does not account for energy losses associated with the transition from a round pipe to a concrete box cross section. These additional losses may reduce the necessary size of the dissipation structure. As part of the proposed research, the research team would like to develop and validate a formal design procedure and simultaneously optimize design details of the resulting dissipator geometry.


    • English


    • Status: Active
    • Funding: $107,088.00
    • Sponsor Organizations:

      Nebraska Department of Transportation

      1500 Nebraska 2
      Lincoln, NE  United States  68502
    • Project Managers:

      Halsey, Lieska

    • Principal Investigators:

      Admiraal, David

    • Start Date: 20200701
    • Expected Completion Date: 20221231
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01735853
    • Record Type: Research project
    • Source Agency: Nebraska Department of Transportation
    • Files: RIP, STATEDOT
    • Created Date: Apr 6 2020 5:06PM