The temperature effects on an experimental, prestressed concrete, segmental, box-girder bridge were evaluated. Field measurements, including vertical deflections and thermocouple readings for temperature, were collected over a 1-year period under various weather conditions. Critical ambient temperature conditions were gleaned from field observations. With the field observations (surface temperatures) as input, three-, two-, and one-dimensional heat-flow analyses were conducted. The three-dimensional heatflow analysis was a statistical comparison of temperature readings at various longitudinal locations in the experimental bridge. The two-dimensional analysis involved the collection of hourly temperature readings from 24 thermocouples at the midspan of the test bridge for 18 diurnal cycles within a 1-year period. In addition an alternating-direction implicit finite difference analysis was performed, and the results compared well with the field observations. Finally, a one-dimensional approach was formulated with the application of an initial-value method. This was found to be in agreement with the alternating-direction implicit finite difference model and the collected field data.

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References;
  • Pagination: pp 42-50
  • Monograph Title: Bridges and foundations
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00399174
  • Record Type: Publication
  • ISBN: 0309037646
  • Files: TRIS, TRB
  • Created Date: Jan 31 1986 12:00AM