THERMAL STRESSES IN CONCRETE BRIDGE SUPERSTRUCTURES UNDER SUMMER CONDITIONS

Current design practice for deep concrete bridge superstructures generally ignores the influence of the diurnal heating cycle on the flexural response of members and instead, considers mean temperature effects. A 1-demensional heat-flow analysis is used to study the flexural deformations and stresses that are developed in deep concrete sections as a result of a typical summer heating cycle. Both nonlinear temperature and stress distributions are observed, and nonlinearity increases with member depth. An analysis of 2 typical continous concrete structures indicates stresses exceeding those associated with live load and amounting to 40 percent of the allowable area possible for concrete structures having a depth of more than 4 ft (1.22 m).

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 23-36
  • Monograph Title: Concrete and steel bridges
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00128545
  • Record Type: Publication
  • ISBN: 0309024548
  • Files: TRIS, TRB
  • Created Date: May 14 1976 12:00AM