ECCENTRICALLY PRESTRESSED BOX GIRDERS UNDER COMBINED BENDING AND TORSION

An investigation of bending-torsion interaction in eccentrically prestressed concrete box girders is reported. The ten specimens tested were underreinforced in the longitudinal and transverse directions, and were prestressed initially so that extreme fiber stresses were up to the limits allowed in practice. The only intentional variable in the study was moment-torque ratio which was varied over the range of zero to infinity. Bending-torsion interaction at first cracking was closely predicted by a parabolic equation proposed by H. J. Cowan for sections without transverse reinforcement. A procedure is presented for developing interaction diagrams for girders of the type studied.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0889325X
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Batchelor, B D
  • MCEWEN, W D
• Publication Date: 1977-4

Media Info

• Features: References;
• Pagination: p. 156-162
• Serial:
  • American Concrete Institute, Journal of
  • Volume: 74
  • Issue Number: 4
  • Publisher: American Concrete Institute
  • ISSN: 0889-325X

Subject/Index Terms

• TRT Terms: Beams; Bending; Box girders; Concrete; Concrete construction; Concrete tests; Cracking; Eccentricity; Engineering moments; Fracture mechanics; Prestressing; Structural analysis; Torque; Torsion
• Uncontrolled Terms: Prestressed
• Old TRIS Terms: Beams and girders; Eccentrics; Moments
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00158340
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM