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Composite Action in a Steel Girder Span With Precast Deck Panels: The I-81 Bridge Over the New River in Radford, Virginia

Michael C. Brown ... [et al.]
Format
EBook; Book; Government Document; Online
Published
Charlottesville, Va. : Virginia Transportation Research Council ; [Springfield, Va. : Available to the public through NTIS], 2003.
Language
English
Series
VTRC
VTRC (Series)
Abstract
Two parallel bridges carry I-81 north and south over the New River in southwest Virginia, near the city of Radford. The bridges are identical in design and have been in place since 1985. In recent years, a number of maintenance issues have been reported, primarily related to cracking of the cast-in-place topping over partial-depth precast deck panels. A study was undertaken to determine the influence of the observed deterioration on the structural capacity of the affected bridge spans. The analysis indicated that the full potential of the composite slab-girder system is no longer being realized. Continued deterioration of the deck is likely, especially given the frequency of heavy truck traffic on this structure and the inherent vibration. It appears that the presence of precast cast-in-place deck sections has reduced the overall stiffness of the deck as compared to the original design. The movement, in conjunction with a poor deck panel support detail, is likely to cause a continual maintenance problem, as additional precast panels begin to move and fracture of the cast-in-place topping occurs. As a potential mitigation option, replacement of the fiber bolster material between the top flange of the girders and the precast panels with more rigid steel shims and/or concrete is recommended to increase the bearing surface of the panels, reduce vertical displacement of panel edges, and minimize dynamic impact at the joints.
Description
iii, 17 p. : ill. ; 28 cm.
Notes
  • "October 2003."
  • Includes bibliographical references (p. 17).
Series Statement
VTRC ; 04-R4
VTRC (Series) ; 04-R4
Other Forms
Also available on the Internet. Adobe Acrobat Reader required.
Copyright Not EvaluatedCopyright Not Evaluated
Technical Details
  • Access in Virgo Classic
  • Staff View

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    a| FHWA/VTRC 04-R4
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    a| TDG c| TDG d| OCLCQ
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    a| TG325.6 b| .C66 2003
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    a| Composite action in a steel girder span with precast deck panels : b| the I-81 bridge over the New River in Radford, Virginia / c| Michael C. Brown ... [et al.].
    260
      
      
    a| Charlottesville, Va. : b| Virginia Transportation Research Council ; a| [Springfield, Va. : b| Available to the public through NTIS], c| 2003.
    300
      
      
    a| iii, 17 p. : b| ill. ; c| 28 cm.
    490
    1
      
    a| VTRC ; v| 04-R4
    500
      
      
    a| "October 2003."
    504
      
      
    a| Includes bibliographical references (p. 17).
    513
      
      
    a| Final report. b| July 2002-September 2003.
    520
    3
      
    a| Two parallel bridges carry I-81 north and south over the New River in southwest Virginia, near the city of Radford. The bridges are identical in design and have been in place since 1985. In recent years, a number of maintenance issues have been reported, primarily related to cracking of the cast-in-place topping over partial-depth precast deck panels. A study was undertaken to determine the influence of the observed deterioration on the structural capacity of the affected bridge spans. The analysis indicated that the full potential of the composite slab-girder system is no longer being realized. Continued deterioration of the deck is likely, especially given the frequency of heavy truck traffic on this structure and the inherent vibration. It appears that the presence of precast cast-in-place deck sections has reduced the overall stiffness of the deck as compared to the original design. The movement, in conjunction with a poor deck panel support detail, is likely to cause a continual maintenance problem, as additional precast panels begin to move and fracture of the cast-in-place topping occurs. As a potential mitigation option, replacement of the fiber bolster material between the top flange of the girders and the precast panels with more rigid steel shims and/or concrete is recommended to increase the bearing surface of the panels, reduce vertical displacement of panel edges, and minimize dynamic impact at the joints.
    530
      
      
    a| Also available on the Internet. Adobe Acrobat Reader required.
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    a| Sponsored by the Virginia Department of Transportation and U.S. Federal Highway Administration under contract no. b| 21724
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    a| Brown, Michael Carey, d| 1969-
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    a| Virginia Transportation Research Council.
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    a| Virginia. b| Department of Transportation
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    a| United States. b| Federal Highway Administration.
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    a| TG325.6 .C66 2003 w| LC i| 3994501-1001 l| STACKS m| SPEC-COLL t| RAREBOOK
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    a| VHRC 3/R 29/60-R4 w| SUDOC i| X004751074 l| DOC-VA m| ALDERMAN t| DOCUMENT
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