SHEAR CAPACITY OF REINFORCED JOINTS IN CONCRETE STRUCTURES

SKJUVNINGSKAPACITETEN HOS ARMERADE FOGAR I BETONGKONSTRUKTIONER

The report deals with an investigation of the shear capacity of construction joints with shear keys and initially cracked construction joints. It is assumed that the shear failure in concrete obeys the coulomb's equation and that local crushing occurs where the principal compressive stress exceeds the cylinder strength of concrete. The shear capacity of joints with shear keys is the sum of the shear capacity of individual shear keys. Failure in a shear key can occur as slipping failure, different types of shear failure, crushing failure, bending-compression failure and bending-tension failure, which all are derived from the above-mentioned assumptions. An initially cracked joint is assumed to consist of a number of small plane surfaces, partial surfaces, confined by parallel lines normal to the direction of the shear force. The partial surfaces forming the largest angle with the joint plane will then carry the compressive and shear force acting in the joint. A computer program based on the assumption that crushing and local shear failures can occur at the loaded partial surfaces has been developed to calculate the relation between the shear stress and the compressive stress normal to the joint plane. Initially cracked joints with inclined reinforcement have also been studied. (TRRL)

  • Corporate Authors:

    Royal Institute of Technology, Sweden

    Valhallavagen 79
    Stockholm,   Sweden  100 44
  • Authors:
    • Carlsson, K-I
  • Publication Date: 1979

Language

  • Swedish

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 168 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00331181
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: Meddelande 3/79 Monograph
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM