RIO-NITEROI BRIDGE: THERMAL FIELD STUDIES

One side span of the three-span ((200,300,200 m) continuous steel box girder bridge in Rio de Janeiro was instrumented for measuring strains and temperature during construction and in service. Electrical, mechanical, and scratch guages were used. The field measurements, conducted in winter and summer, show that the daily temperature increase is the largest from 6:30 a.m. to 3:00 p.m. The high temperature change in the top flange drops within 0.30 m by as much as 13 to 15 degrees C and then remains essentially constant in the rest of the cross section. A computer program was developed for generating a complete thermal field in the bridge from the temperatures specified at two cross sections and for performing thermoelastic analysis. The highest termal stress was found to be 14.2 MPa. Recommendations are made for a temperature change pattern to be used in design of steel bridges under the Rio de Janeiro conditions and for the intensification of research in the United States on thermal effects in bridge structures. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/607/607-009.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=RIO-NITEROI+BRIDGE%3A+THERMAL+FIELD+STUDIES&author=A.+Ostapenko&publication_year=1976
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Steel 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:
  • Ostapenko, A
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; Photos; References;
• Pagination: pp 43-49
• Monograph Title: Bridge design, testing, and evaluation
• Serial:
  • Transportation Research Record
  • Issue Number: 607
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Box girders; Bridge superstructures; Computer programs; Cross sections; Elastic analysis; Field studies; Flanges; Machinery; Measuring instruments; Mix design; Steel structures; Strain measurement; Temperature; Thermal properties; Thermal stresses
• Uncontrolled Terms: Bridge spans; Marshall mix design
• Old TRIS Terms: Elastic analysis (Structural); Mechanical equipment
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00157813
• Record Type: Publication
• ISBN: 0309025826
• Files: TRIS, TRB
• Created Date: Sep 28 1977 12:00AM