Research Article
Sep 1976
Wake Study of Stiffening Truss and Box Girder
Publication: Journal of the Structural Division
Volume 102, Issue 9
Abstract
A 1:64 scale 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 to 1 box member was also tested in rigid configuration only. For the stationary truss model in turbulent flow, at 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.
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Information
Published In
Journal of the Structural Division
Volume 102 • Issue 9 • September 1976
Pages: 1643 - 1657
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Sep 1976
Published online: Feb 1, 2021
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Authors
Affiliations
Timothy A. Reinhold
Research Assoc., Dept. of Engrg. Sci. and Mechanics, Virginia Polytechnic Inst. and State Univ., Blacksburg, Va.
Francis J. Maher
Assoc. Prof., Dept. of Engrg. Sci. and Mechanics, Virginia Polytechnic Inst. and State Univ., Blacksburg, Va.
Henry W. Tieleman
Prof., Dept. of Engrg. Sci. and Mechanics, Virginia Polytechnic Inst. and State Univ., Blacksburg, Va.
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