A NEW DESIGN METHOD FOR CONTINUOUS COMPOSITE BEAMS

The behaviour of continuous composite beams is influenced by a considerable number of parameters, which describe the span and support sections, and the arrangement of loads and spans. This paper assesses the ability of current design methods to allow for these parameters, with specific reference to the rules proposed in Eurocode 4 (EC4), which is assumed to represent modern design codes. It was found that all the relevant parameters can be represented by available rotation capacity or required rotation capacity. A new design procedure for designing composite beams is outlined, which is based on both these parameters. It uses design curves that give required rotation capacity as a function of moment redistribution. These curves were derived directly from computed results, so that they allow for the influence for all important parameters affecting beam behaviour. Thus the design method no longer needs simplifying assumptions. It has the following benefits. It can be used for all practical sections, with all arrangements of spans and loads; it can be applied easily to beams containing semi-rigid connections. Considerable increases in calculated beam load capacity are possible. Greater accuracy is possible, but the method is simple enough for daily use by design engineers; its information can be presented graphically.

  • Availability:
  • Corporate Authors:

    International Association for Bridge and Structural Engineering

    ETH-Honggerberg, Wolfgang-Pauli-Strasse 15
    Zurich 8093,   Switzerland  CH-8093
  • Authors:
    • COUCHMAN, G
    • LEBET, J-P
  • Publication Date: 1996-5

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 96-101
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00726599
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM