ANALYSIS OF ORTHOTROPIC REINFORCED CONCRETE STRUCTURES

A MATHEMATICAL MODEL IS DERIVED FOR STRESS-STRAIN PROPERTIES OF REINFORCED CONCRETE. THE MODEL IS OBTAINED FROM STRESS-STRAIN RELATIONS OF REINFORCING STEEL AND PLAIN CONCRETE, AND FROM CONSIDERING SLIP IN BOND BETWEEN THEM. THE STRESS-STRAIN RELATIONS FOR PLAIN CONCRETE ARE BASED ON EXPERIMENTAL DATA OBTAINED UNDER UNIAXIAL, BIAXIAL AND TRIAXIAL COMPRESSIVE STRESS, AND BIAXIAL TENSILE AND COMPRESSIVE STRESS. THE MODEL STRESS-STRAIN RELATION IN EACH PRINCIPAL STRESS DIRECTION IS AFFECTED BY THE OTHER TWO PRINCIPAL STRESSES. THE FORM OF THE STRESS-STRAIN RELATION AND THE MANNER IN WHICH IT IS AFFECTED BY THE LATERAL PRINCIPAL STRESSES IS DIFFERENT IN TENSION AND COMPRESSION. A BILINEAR TENSILE-STRESS-STRAIN RELATION IS USED TO REPRESENT THE ELASTIC-PLASTIC PROPERTIES OF THE REINFORCING STEEL. UNTIL CRACKING OCCURS, PROPERTIES OF THE MODEL DEPEND ENTIRELY ON THE CONCRETE. AFTER CRACKING, A COMPOSITE MODULUS IS USED WHICH REFLECTS THE COMBINED STIFFNESS OF STEEL AND CONCRETE AND TAKES INTO ACCOUNT THE EXTENT TO WHICH BOND BETWEEN STEEL AND CONCRETE IS BROKEN. /AUTHOR/

• Supplemental Notes:
  • Vol 96, No ST 12, PROC PAPER 7782, PP 2607-2624, 13 FIG,
• Authors:
  • Isenberg, J
  • Adham, S
• Publication Date: 1970-12

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Bonding; Compression; Deformation curve; Material reinforcement; Mathematical models; Modulus of elasticity; Orthotropic; Reinforced concrete; Stiffness; Structural engineering; Structures; Tension
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209372
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 8 1971 12:00AM