A SYSTEM IDENTIFICATION METHOD FOR STRUCTURAL ENGINEERING APPLICATIONS

This report describes a system identification method for structural engineering applications. The method allows the structural models to be described by a linear elastic structural analysis computer code. To do this, equations are formed which enable the structural response to be considered a quadratic function of the significant structural parameters. Once the equations are formulated, standard system identification techniques are applied to obtain the optimum structural parameter values. Tests carried out with simulated data showed that the quadratic equations allow an accurate modelling of the theoretical structural response, and the Newton-Raphson solution routine works very well. To show the application of the system identification method, it was used to determine certain parameters of the May Street bridge in Wellington. Data from static and dynamic tests carried out in 1978 were available, and using these, together with an open grid computer model, optimum values of concrete elastic modulus, elastomeric bearing stiffness and foundation stiffness were obtained which gave excellent agreement between the response of the computer model and the experimental response. (Author/TRRL)

  • Corporate Authors:

    University of Auckland

    Private Bag
    Auckland 1,   New Zealand 
  • Authors:
    • Scarry, J M
  • Publication Date: 1983-3

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 45 p.
  • Serial:
    • Issue Number: 306

Subject/Index Terms

Filing Info

  • Accession Number: 00390288
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Dec 30 1984 12:00AM