PHYSICAL-ENGINEERING MODEL OF REINFORCED CONCRETE FRAMES IN COMPRESSION

A calculation of the complementary moments due to second-order effects and the analysis of the stability of reinforced concrete framed structures can be conceived as follows. With the aid of a computer a very large number of D-N-X diagrams can be produced on the basis of the standard specified stress-strain diagrams for concrete and steel. A framed structure is then analysed with an available program which takes account of second-order effects. The flexural stiffnesses E1 to be adopted are estimated and corrected with reference to the M-N-X diagrams calculated once before and held in store for the purpose. The present paper discusses the drawbacks of this approach and proposes a method of analysis which can be fitted into existing programs for framed structures and dispenses with the large number of stored M-N-X diagrams. It is shown that direct use can be made of the stress-strain diagrams. The results are just as reliable as those obtained by the procedure utilising the M-N-K diagrams. The method can be applied to total frames and single members in compression as well.

  • Corporate Authors:

    Rijkswaterstaat

    4 Koningskade
    The Hague,   Netherlands 
  • Authors:
    • Blaauwendraad, J
  • Publication Date: 1973

Media Info

  • Features: Figures; References;
  • Pagination: 32 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00265578
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Report 15 R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: May 29 1975 12:00AM