Life-cycle performance of RC bridges: probabilistic approach

DV Val, MG Stewart, RE Melchers

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    45 Citations (Scopus)

    Abstract

    This article addresses the problem of reliability assessment of reinforced concrete (RC) bridges during their sen,ice life. Fil st, a probabilistic model for assessment of time-dependent reliability of RC bridges is presented, with particular emphasis placed on deterioration of bridges due to corrosion of reinforcing steel. The model takes into account uncertainties associated with materials properties, bridge dimensions, lends, and corrosion initiation and propagation. Time-dependent reliabilities are considered for ultimate and serviceability limit states. Examples illustrate the application of the model. Second, updating of predicting probabilistic models using site-specific data is considered. Bayesian statistical theory that provides a mathematical basis for such updating is outlined briefly: and its implementation for the updating of information about bridge properties using inspection data is described in more detail. An example illustrates the effect of this updating oil bridge reliability.

    Original languageEnglish
    Pages (from-to)14-25
    Number of pages12
    JournalComputer-Aided Civil and Infrastructure Engineering
    Volume15
    Issue number1
    DOIs
    Publication statusPublished - Jan 2000

    Keywords

    • concrete
    • reinforcement corrosion
    • highway bridges
    • behaviour
    • strength
    • reliability
    • steel

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