Analysis of Curved Weathering Steel Box Girder Bridges in Fire

Box girder bridges are becoming more common because of their ease of construction, pleasing aesthetics, and serviceability. Projects with curved configuration and long spans can especially benefit from these advantages. However, the industry lacks a wide range of research on multi-span steel box girder cross-sections and their response to fire events. In addition, steel box girders are commonly constructed from weathering steel, which has little available research into their performance in fire. This paper will discuss the current literature, challenges, and available verification studies for this particular combination of cross section and material properties. Results show large deflections in the steel box girder as the temperature of the steel increases over the duration of the fire. Temperatures of the steel tub increase rapidly due to the low weight-to-heated perimeter ratio of the thin members. The concrete slab does not exhibit significant increase in temperature from the fire below. Furthermore, forces that act on the individual members of the bridge are greatly affected by the location of the fire.

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  • Supplemental Notes:
    • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    Manhattan College

    Department of Civil and Environmental Engineering
    Bronx, NY  United States  10471-4098

    University Transportation Research Center

    City College of New York
    Marshak Hall, Suite 910, 160 Convent Avenue
    New York, NY  United States  10031

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Authors:
    • Whitney, Reeves
    • Braxtan, Nicole Leo
    • Wang, Qian
    • Koch, Gregory
  • Publication Date: 2016-5-31


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 61p

Subject/Index Terms

Filing Info

  • Accession Number: 01610885
  • Record Type: Publication
  • Contract Numbers: 49198-28-26
  • Created Date: Sep 7 2016 7:32AM