Bridge response due to temperature variations.

Details

• Creators:
  Rojas, Edyson ; Barr, Paul J. ; Halling, Marv W.
• Corporate Creators:
  Rutgers University. Center for Advanced Infrastructure & Transportation
• Corporate Contributors:
  Rutgers University ; Utah. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Box girder bridges
  • Strain gages
  • Thermocouples
  • Temperature measurement
  • Temperature gradients
  • Bending stress
• Publication/ Report Number:
  CAIT-UTC-034
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Rutgers University. Center for Advanced Infrastructure & Transportation
• Abstract:
  In order to more accurately quantify the behavior and degradation of bridges throughout their service life, the ; Federal Highway Administration lunched the Long-Term Bridge Performance Program. As part of this program ; an I-girder, integral abutment bridge near Perry, Utah and a two span, box-girder bridge south of Sacramento, ; California were instrumented with foil strain gauges, velocity transducers, vibrating wire strain gauges, thermocouples, and tiltmeters. In this research study, data from the thermocouples was used to calculate average bridge ; temperature and compare it to the recommended design criteria in accordance to the 2010 LRFD Bridge Design ; Specifications of the American Association of State Highway and Transportation Officials (AASHTO). The design ; maximum average bridge temperature defined in the 2010 LRFD Bridge Design Specifications was exceeded for ; both bridges. The accuracy of the 1991 Kuppa Method and the 1976 Black and Emerson Method to estimate ; the average bridge temperature based on ambient temperature was studied and a new method that was found ; to be more accurate was proposed. Long-term predictions of average bridge temperature for both bridges were ; calculated. Temperature gradients were measured and compared to the 2010 AASHTO LRFD Bridge Design ; Specifications and the 1978 Priestley Method. Calculated flexural stresses as a function of maximum positive and ; negative temperature gradients were found to exceed the service limit state established in the 2010 AASHTO ; LRFD Bridge Design Specifications in the case of the California bridge.
  More +
• Format:
  PDF
• Funding:
  DTRT12-G-UTC16
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28580/dot_28580_DS1.pdf
• File Type:
  [PDF - 2.99 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:b35b8b8bf080048a90d47593a68ea99798c0a53899d811cd8291385416645e39