TWO METHODS FOR ANALYZING THE STABILITY OF SLENDER CONCRETE COLUMNS AND FRAMES

The stability of slender columns has been studied using non-linear stress-strain relationship for concrete and taking into account the effects of cracking, creep and shrinkage by the means of the method of finite differences. On the basis of computer calculations a formula for the stiffness of columns has been developed. Using the stiffness formula and the usual method of elasticity the stability problem of slender columns can be solved manually. Curves for rectangular & circular columns have been calculated. The agreement between calculation and test results is found to be good, especially in the case of computer analysis. The manual method can be applied also to the frame analysis. The second order moment of the beams can be calculated practically by this method. The results of the study indicate that the creep reduces the bearing capacity of columns. It is recommended that the effect of creep be taken into account in the design of concrete columns and frames. /TRRL/

  • Availability:
  • Corporate Authors:

    Cement och Betonginstitut

    Drottning Kristinas Vaeg 26
    Stockholm 70,   Sweden 
  • Authors:
    • SARJA, A
  • Publication Date: 1974

Media Info

  • Features: Figures; References;
  • Pagination: 9 p.
  • Serial:
    • Nordisk Betong
    • Issue Number: 5
    • Publisher: Nordiska Betongfoerbundet
    • ISSN: 002913070029-1307

Subject/Index Terms

Filing Info

  • Accession Number: 00096179
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 24 1975 12:00AM