WAKE STUDY OF STIFFENING TRUSS AND BOX GIRDER

A 1:64 seale model of the William Preston Lane, Jr., Memorial Bridge was studied in the wind tunnel to determine possible downstream effects on a parallel structure. The model was tested in smooth flow and in a grid-induced turbulent flow with the model held rigidly and also in a mounting allowing torsional oscillation. A 3.1 model in turbulent flow, as a downstream distance of about 10 bridge widths, the wake is random in nature with somewhat higher turbulence intensities. For the smooth flow, significant effects are still noticeable at a spacing of over 13 widths, the maximum distance tested. The same conclusions obtained for the box, although at greater spacings. For the oscillating model in turbulent flow, a small effect remains at maximum distance, while strong effects remain for smooth flow at the same location. Testing real problems in turbulent flow is recommended. /ASCE/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • REINHOLD, T A
  • Tieleman, H W
  • Maher, F J
• Publication Date: 1976-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 1643-57
• Serial:
  • Journal of the Structural Division
  • Volume: 102
  • Issue Number: ST9
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Box girders; Bridge design; Bridges; Flow; Structural design; Trusses; Turbulence
• Candidate Terms: Turbulent flow
• Uncontrolled Terms: Model tests; Stiffening
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00141792
• Record Type: Publication
• Report/Paper Numbers: ASCE # 12372
• Files: TRIS
• Created Date: Dec 22 1976 12:00AM