This paper gives an improved understanding of thermal movements in bridges. It shows that the AASHTO method, which provides a reasonable prediction of thermal movements in many bridges, may be unrealistic for some others. The paper provides guidelines for determining which bridges are not easily handled by the AASHTO method, and describes analytical methods that can be used with them. Design recommendations that help minimize problems with thermal movements are presented. Details of the study are described, and the results are discussed. It is noted that a 1-dimensional analysis is adequate for obtaining temperature distributions in composite bridges, but it predicts higher temperatures of 3 deg-5 deg F in the webs of concrete bridges. When side heating of the webs due to direct insolation occurs, 2-dimensional analysis is required. These and other findings are presented.

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00621112
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Apr 30 1992 12:00AM