TEMPERATURE PROBLEM IN A PRESTRESSED BOX-GIRDER BRIDGE

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.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1984/982/982-007.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=TEMPERATURE+PROBLEM+IN+A+PRESTRESSED+BOX-GIRDER+BRIDGE&author=P.+Hoffman&author=R.+McClure&author=H.+West&publication_year=1984
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Concrete Bridges. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Hoffman, P C
  • McClure, R M
  • West, H W
• Publication Date: 1984

Media Info

• Media Type: Print
• Features: Figures; Photos; References;
• Pagination: pp 42-50
• Monograph Title: Bridges and foundations
• Serial:
  • Transportation Research Record
  • Issue Number: 982
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Box girders; Concrete bridges; Deflection; Girder bridges; Heat flow; Mathematical models; Prestressed concrete; Temperature; Thermocouples; Weather
• Uncontrolled Terms: Models
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls;

Filing Info

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