RISK-BASED BRIDGE MANAGEMENT: OPTIMIZATION AND INSPECTION SCHEDULING

Bridge management based on reliability methods permits the selection of the set of repair projects that minimizes the total network risk in a planning horizon. This approach, previously proposed by the authors, uses the Markovian model for the decay of structural components, evaluates the overall reliability of the bridge as a system, and computes risk by taking into consideration the consequences of reduced function. This paper presents important additional aspects of risk-based bridge management. First, genetic algorithms are proposed as an alternative optimization strategy; small and large bridge networks are solved, guiding the solution towards minimum risk. Second, Markovian transition matrices for deterioration and post-inspection Bayesian updating are combined to schedule inspections so that the overall reliability of the bridge network is maximized for a given inspection budget. Results from a simulation study using a real bridge network are presented and compared with current inspection practice. (A)

  • Availability:
  • Corporate Authors:

    National Research Council of Canada

    1200 Montreal Road
    Ottawa, Ontario  Canada  K1A 0R6
  • Authors:
    • CESARE, M
    • Santamarina, J C
    • TURKSTRA, C J
    • VANMARCKE, E
  • Publication Date: 1994-12

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00726381
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada
  • Files: ITRD, ATRI
  • Created Date: Oct 28 1996 12:00AM