Response of No-Name Creek FRP Bridge to Local Weather

Details

• Creators:
  Liu, Wenjie ; Zhou, Eric ; Wang, Youqi
• Corporate Creators:
  Kansas State University. Transportation Center
• Corporate Contributors:
  Kansas. Dept. of Transportation. Bureau of Materials & Research
• Subject/TRT Terms:
  • Fiber reinforced polymers
  • Fiber reinforced materials
  • Bridges
  • Weather
  • Weather conditions
  • FRP
  • Fiber Reinforced Polymer
  • Bridge
• Publication/ Report Number:
  FHWA-KS-12-6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kansas
• Edition:
  Final report; July 2006-June 2012.
• Corporate Publisher:
  Kansas. Dept. of Transportation
• Abstract:
  Since 1996, over 30 Fiber Reinforced Polymer (FRP) composite bridges have been installed in the United States. Bridge ; locations are in Kansas, Missouri, New York, Iowa, Colorado, West Virginia, Ohio, California, Idaho, Washington, Pennsylvania, ; Illinois, Maryland, Oregon, North Carolina and South Carolina. ; Compared to traditional steel and concrete bridge structures, the FRP panel shows several significant advantages: reduced ; weight, higher strength, better corrosion resistance and quicker installation. However, FRP materials exhibit different physical ; properties. As such, a composite bridge would demonstrate different deformation and failure patterns than a traditional bridge. ; During the past years, much experimental research has been conducted to investigate FRP bridge deck performance. Most ; experiments divide into two types: 1) static and fatigue tests in the laboratory and 2) real traffic load tests in the field. These ; experimental results, as well as FEM analytical results, have served as baseline data for FRP bridge deck design. ; A long-term remote monitoring system was designed to investigate the response of the No-Name Creek composite bridge to ; the local weather. The characteristics of the bridge temperatures, the temperature differences of the two panel surfaces and the ; relationship between the temperature difference and the deflection were investigated with respect to the different weather patterns. ; Twelve thermal sensors were embedded into the FRP bridge panels. In addition, 3 laser sensors were installed to measure bridge ; thermal deflection. Between October 2004 and September 2005, bridge temperature and deflection were measured at 20 minute ; intervals. Relations between weather condition, temperature distribution and bridge thermal deflection for that bridge were ; analyzed. ; From the analysis of the experimental and FE methods, the responses of the composite bridge to weather are summarized as ; follows: ; (1) The temperatures of the upper and bottom panel surfaces and their differences greatly change with time of day and season. ; The extreme temp usually appears in the early afternoon and the minimum temp usually appears in the early morning or in the ; night. The bottom surface temperature is near the climatic temperature. ; (2) The bridge deflections are approximately proportional to the temperature differences. ; (3) The bridge had a significant upward deflection on a sunny day during the summer with the maximum often occurring ; between 3:00-5:00PM. The bridge has a downward deflection during the night with it being the most severe in the winter. ; (4) Comparing climate induced deflection to traffic load induced deflection, the climate induced deflection is at least on the ; same order of deflection as allowable traffic load. Therefore, it should be considered in the FRP bridge design process. ; (5) Thermal load and deflection usually are larger on clear days than on unclear, rainy, and snowy days. ; (6) Distributions of thermal load in the panel can form a larger amount of deflection in the hot season than in the cold season.
  More +
• Format:
  PDF
• Funding:
  C1644
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25076/dot_25076_DS1.pdf
• File Type:
  [PDF - 3.92 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:aa277fdd57dac015dcf65502994574f43db2d08ff80fcf531321af882742f6d1