DRYING AND CRACKING EFFECTS IN BOX-GIRDER BRIDGE SEGMENT

In this study, advances in material modeling were applied to the problem of drying effects in the cross section of a segment of a prestressed concrete box-girder bridge. A numerical example of the cross section of one recently completed bridge is used to examine the effect of drying from the designer's viewpoint and to demonstrate the feasibility of this type of analysis in practice. The study confirmed the feasibility of analyzing box-girder bridges for the following: effect of the diffusion nature of the drying process; effects of creep which significantly reduce the stresses due to drying shrinkage; effect of the additional stress-induced shrinkage; and effect of strain softening, which reduces the shrinkage stresses. Details of the study are described, and the results are discussed.

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  • Accession Number: 00621121
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Apr 30 1992 12:00AM