Analysis of Curved Weathering Steel Box Girder Bridges in Fire: Final Report

Details

• Creators:
  Whitney, Reeves ; Braxtan, Nicole ; Wang, Qian ; Koch, Gregory
• Corporate Creators:
  Manhattan College. Department of Civil and Environmental Engineering
• Corporate Contributors:
  City University of New York. University Transportation Research Center ; United States. Federal Highway Administration ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
• Subject/TRT Terms:
  Box Girder Bridges Bridge Members Composite Bridges Curved Bridges Deflection Finite Element Fire Literature Reviews Steel Box Girder Steel Bridges Thermal Analysis Weathering Steel Research Hub

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• Publication/ Report Number:
  UTRC/RF Grant No: 49198-28-26
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final report
• Corporate Publisher:
  City College of New York. University Transportation Research Center
• Abstract:
  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.
• Format:
  PDF
• Funding:
  49198-28-26
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha-512:ec4803cf7cbf23674c5f824a1c1dbcacc20bc937e0b4e0c9a81366fe01278ccc75d6f05e59568979ab105716fe7a2fceee307162f9a1b4e008a0e1f1296d7af1
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31141/dot_31141_DS1.pdf
• File Type:
  [PDF - 4.42 MB ]