WAKE VORTEX SCOUR AT BRIDGE PIERS

The monitoring is reported of the behavior of two particularly deep scour holes downstream of large circular piers at two bridges across the Nile River at Cairo, Egypt. The scour holes were produced by the conflicting velocity fields at the intersection of the wake vortex streams from adjacent piers. The depths of the scour due to the wake vortices are 8 to 11 m where the normal depth of flow is apporximately 8 m. Details of the findings are described. The depths of scour can be considered nearly clear water scour as the bridges are in the backwater of the Delta Barrages, the velocity is less than 1 m/s, and sediment transport is very low.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Stevens, M A
  • Gasser, M M
  • Saad, MBAM
• Publication Date: 1991-7

Media Info

• Pagination: p. 891-904
• Serial:
  • Journal of Hydraulic Engineering
  • Volume: 117
  • Issue Number: 7
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9429
  • Serial URL: https://ascelibrary.org/journal/jhend8

Subject/Index Terms

• TRT Terms: Bridge piers; Monitoring; Scour; Vortices
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00611001
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1991 12:00AM