ANALYSIS OF SHEAR-CRITICAL REINFORCED CONCRETE BEAMS

Recent experience among some researchers suggests that analysis methods based on the smeared rotating crack concept do not adequately model the response of shear-critical concrete beams containing little or no shear reinforcement. Application of the modified compression field theory (MCFT), one of the first such rotating crack models, to the analysis of shear beams is addressed in this paper. The original constitutive relations are reexamined, and a crack width limit and residual tension term are introduced. When incorporated into a nonlinear finite element procedure, the model is shown to adequately simulate the strength, stiffness, ductility, and failure mode of lightly reinforced shear-critical test beams. Sectional analysis procedures based on the same model are also shown to provide accurate predictions of response. Prevailing mechanisms are discussed, and aspects of the model in need of further refinement are also identified.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Vecchio, F J
• Publication Date: 2000-1

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 102-110
• Serial:
  • ACI Structural Journal
  • Volume: 97
  • Issue Number: 1
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Beams; Cracking; Deflection; Ductility; Failure; Finite element method; Mathematical models; Reinforced concrete; Residual stress; Shear properties; Shear reinforcement; Stiffness; Tension; Tests; Ultimate load design
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00789055
• Record Type: Publication
• Contract Numbers: CMS-9640570, CMS-9540657, CMS-9401211
• Files: TRIS
• Created Date: Mar 29 2000 12:00AM