METHODOLOGY FOR THE ASSESSMENT OF THE STRUCTURAL BEHAVIOUR OF CONCRETE BRIDGES

Recent years have witnessed a significant development in structural models of analysis and in structural reliability techniques. The proper combination of the two approaches is still to be accomplished. The difficulties encountered in design methodology are well demonstrated in recently published structural codes, Eurocode 2 and CEB-FIP Model Code 1990. They specify the use of non-linear methods of analysis as an alternative and as a reference for other more simplified approaches. However, an adequate code format for checking structural safety when dealing with this kind of method is not established. The methodology for the verification of structural safety described in this work is based on a probabilistic approach with general application to any type of structural methods of analysis, especially non-linear analysis. The ultimate strength characteristics of materials, the geometric imperfections and the loads, are simulated according to stochastic techniques. The uncertainty of structural response is given by non-linear analysis taking into account the variability of the parameters. Through statistical analysis it is possible to interpret the effects of the parameter variability on the global structural behaviour and to evaluate the risk of failure. (A) For the covering abstract see IRRD 882313.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 138-46

Subject/Index Terms

Filing Info

  • Accession Number: 00729458
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-419-21210-8
  • Files: ITRD
  • Created Date: Dec 26 1996 12:00AM