TORSIONAL STRENGTH OF REINFORCED AND PRESTRESSED CONCRETE BEAMS--CEB APPROACH

Besides a "Standard Method" derived from semi-empirical considerations the new CEB model code proposes a "Refined Method" for the design of reinforced and prestressed concrete members subjected to torsion. It is compatible with the design method for bending and shear and combined cases of bending, shear and torsion. The method is theoretically based on the plastic analysis of a space truss model consisting of stringers acting as compression or tension chords, stirrups as posts and an effective concrete shell forming a compression field at a variable inclination alpha. The model is explained and the design formulas for the "Refined Method" are derived. Comparisons with appropriate test results as well as with the CEB "Standard Method" are made. /Author/

• Supplemental Notes:
  • Concrete Design: U.S. and European Practices. Proceedings of the symposium cosponsored by the American Concrete Institute, the Comite Euro-International du Beton, the Prestressed Concrete Institute, and the Federation Internationale de la Precontrainte, ACI Annual Convention, Philadelphia, 1976.
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Thurlimann, B
• Publication Date: 1979

Media Info

• Features: Figures; References;
• Pagination: p. 117-143
• Serial:
  • Publication of: American Concrete Institute
  • Publisher: American Concrete Institute (ACI)

Subject/Index Terms

• TRT Terms: Beams; Bending; Compression; Mathematical models; Plastic analysis; Prestressed concrete; Prestressing; Reinforced concrete; Shear strength; Structural design; Torsion; Trusses
• Uncontrolled Terms: Models
• Old TRIS Terms: Plastic analysis (Structural)
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00196173
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 15 1979 12:00AM