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Wind-tunnel study of the Weirton-Steubenville cable-stayed bridge

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dc.contributor.authorPeterka, J. A. (Jon A.), author
dc.contributor.authorBienkiewicz, Bogusz, author
dc.contributor.authorCermak, Jack E., author
dc.contributor.authorFluid Dynamics and Diffusion Laboratory, College of Engineering, Colorado State University, publisher
dc.date.accessioned2007-01-03T06:20:27Z
dc.date.available2007-01-03T06:20:27Z
dc.date.issued1982-08
dc.descriptionIncludes bibliographical references.
dc.descriptionFor Modejski and Masters, Consulting Engineers.
dc.descriptionCER82-83JEC-BB-JAP5.
dc.description.abstractA section model of the proposed Weirton-Steubenville cable-stayed bridge was used in the wind-tunnel study. The freely oscillating section model of the bridge deck was studied to evaluate the aerodynamic stability of the bridge. Basic aerodynamic derivatives were extracted in smooth flow and were used to estimate the prototype bridge critical wind speed for the one degree-of-freedom (torsional) flutter. The amplitude of the vortex-induced bridge oscillation was also assessed. The bridge section model response revealed one degree-of-freedom (torsional) flutter instability occurring at a critical wind speed dependent upon the value of mechanical damping of the model. The estimated critical speed for the prototype bridge was about 190 mph for the ratio of assumed damping to critical of the order of 0.8 percent and angles of attack in the range from -6 degrees to +6 degrees. Vortex-induced oscillation of the bridge section model (both in a vertical and a torsional degree-of-freedom) occurred at substantially lower speeds. The maximum amplitude of the corresponding prototype motion (higher for vertical oscillation) was estimated not to exceed 0.5 percent of B (where B is the width of the bridge deck) for the same damping level. The aerodynamic behavior of the bridge deck was improved by streamlining of the deck geometry.
dc.format.mediumreports
dc.identifier.urihttp://hdl.handle.net/10217/83380
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991012056839703361
dc.relationTA7.C6 CER 82/83-5
dc.relation.ispartofCivil Engineering Reports
dc.relation.ispartofCER, 82/83-5
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subject.lcshWind tunnel models
dc.subject.lcshCable-stayed bridges -- Aerodynamics
dc.titleWind-tunnel study of the Weirton-Steubenville cable-stayed bridge
dc.typeText
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