PROPOSED DESIGN PROCEDURES FOR SHEAR AND TORSION IN REINFORCED AND PRESTRESSED CONCRETE

The object of this study is to propose and evaluate a design procedure for shear and torsion in reinforced and prestressed concrete beams, with the aim of clarifying and simplfying current design requirements and AASHTO requirements. In previous reports in this series a three-dimensional space truss model with variable angles of inclination of the diagonals was introduced as a design model and shown by comparison with test data to be a conservative yet more accurate model than current ACI/AASHTO design approaches. The general nature of this variable angle truss model makes it extremely useful to the designer in treating complex shear and torsion problems. Several examples of such applictions are included in this report. Specific recommendations for incorporating such models are presented in language and expressions consistent with the type of language used in AASHTO Bridge Specifications. Several design examples are included both to clarify the application of the design model and to provide a comparison of the reinforcement using both the proposed changes and the current AASHTO requirements.

  • Supplemental Notes:
    • Study conducted in cooperation with the U. S. Department of Transportation, Federal Highway Administration. Research Study Title: Reevaluation of AASHTO Shear and Torsion Provisions for Reinforced and Prestressed Concrete.
  • Corporate Authors:

    University of Texas, Austin

    Center for Transportation Research, 3208 Red River Street
    Austin, TX  United States  78705

    Texas State Department of Highways & Public Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Ramírez, J A
    • Breen, J E
  • Publication Date: 1983-11

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 270 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00391345
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-TX-84-38+248-4FFinal Rpt., Res Study 3-5-80-248
  • Contract Numbers: 3-5-80-248
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Jan 30 2001 12:00AM