Results of field tests conducted by the AAR research staff on two Seaboard Air Line concrete slab bridges are discussed. The tests compared a 7-span, 134-ft-long, conventionally reinforced bridge with a 6-span, 148-ft long prestressed structure. Information was also obtained on the loading effects to concrete piling. It is noted that bridge behavior conformed to results of previous tests. Stresses were less than calculated; transverse load distribution was nearly uniform across decks; impact increased slightly with speed for conventionally reinforced spans; recorded impacts were considerably less in the prestressed span; maximum impacts occurred under the cars; and wheel irregularities caused high impacts of short duration; and a rail joint influenced total impact values on one span.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Publication Date: 1964-11

Media Info

  • Pagination: p. 185
  • Serial:
    • Volume: 66 N
    • Issue Number: 588
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00052290
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM