Recommendations for Improving Fire Performance of Steel Bridge Girders

Details

• Creators:
  Whitney, Reeves ; Braxton, Nicole Leo ; Alsayed, Halima
• Corporate Creators:
  Manhattan College. Department of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers Program (UTC) ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; City University of New York. University Transportation Research Center
• Subject/TRT Terms:
  • Girder bridges
  • Steel bridges
  • Fire resistance
  • steel bridge girders
  • fire protection
• Resource Type:
  Tech Report
• Geographical Coverage:
  New York (New York) ; United States
• Corporate Publisher:
  University Transportation Research Center
• Abstract:
  Infrastructure risk due to fire has been well documented. In particular, bridges in the urban environment are susceptible due to low overhead clearances on overpasses, existing simple spans with no redundancy, due to low overhead clearances on overpasses, existing simple spans with no redundancy, narrow lane widths and general alignment congestion. Although the risk is significant, the current AASHTO Bridge Design Specification does not include provisions for design due to fire conditions. As such, this paper considers alternatives for improving the fire resistance of steel bridges using both traditional and nontraditional fire protection methods. In this paper, a total of eight parameters are investigated: (1) global section factor (W/D ratio) of bridge girder cross-section; (2) thickness of the flange; (3) thickness of the web; (4) steel material specification; (5) concrete slab width; (6) concrete slab thickness; (7) thickness of intumescent paint; and (8) thickness of SFRM. It is shown that the temperature domain performance can be significantly increased by (1), (3), (7), and (8) while the other parameters are less effective. The recommendations from this research can be readily implemented in both bridge design and retrofit scenarios.
• Format:
  PDF
• Funding:
  49198-19-28
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/36568/dot_36568_DS1.pdf
• File Type:
  [PDF - 2.83 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:9dd4a1469fd2b0fa8b7acfa7fcf9b6bcb4585ad2b661cddb95ba8123a2ebab3d