TORSION-SHEAR-FLEXURE INTERACTION IN REINFORCED CONCRETE MEMBERS

An analysis for predicting stresses, strains and rotations at all levels of load and for predicting the strength of members under combined torsion-shear-flexure loads is presented. Equilibrium and compatibility are considered and the analysis predicts the phenomenon of "shear relief", whereby the torsional strength of an over-reinforced beam is enhanced by a small shear load. A torsion-shear-flexure interaction surface is proposed which is actually a combination of two surfaces. An equation defining the space curve formed by the intersection of these two surfaces is derived. Use of this equation indicates the portion of the interaction surface that is appropriate for a particular combination of loads. The proposed interaction surface is compared with test results available in the literature and good correlation is noted.(a) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
• Corporate Authors:

  Cement and Concrete Association

  Wexham Spring
  Slough SL3 6PL, Buckinghamshire,   England 
• Authors:
  • Ewida, A A
  • McMullen, A E
• Publication Date: 1981-6

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 113-122
• Serial:
  • MAGAZINE OF CONCRETE RESEARCH
  • Volume: 33
  • Issue Number: 115
  • Publisher: Thomas Telford Limited
  • ISSN: 0024-9831

Subject/Index Terms

• TRT Terms: Beams; Bending; Deformation; Failure; Forecasting; Loads; Mathematical models; Reinforced concrete; Rotation; Shear strength; Strain (Mechanics); Strength of materials; Stresses; Torsion
• Uncontrolled Terms: Interaction
• Old TRIS Terms: Shear failures; Strains; Test results
• ITRD Terms: 3472: Beam; 5586: Deflection; 5595: Deformation; 132: Forecast; 5567: Load; 6473: Mathematical model; 4794: Reinforced concrete; 5531: Shear; 5544: Strength (mater); 5575: Stress (in material); 5512: Torsion
• Subject Areas: Bridges and other structures; Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00341640
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Dec 22 1981 12:00AM