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Redundancy of structural systems with and without maintenance: An approach based on lifetime functions

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  • Okasha, Nader M.
  • Frangopol, Dan M.

Abstract

The lifetime reliability of existing structures may be quantified by lifetime functions. Redundancy is an additional type of structural performance indicator that is defined as a measure of warning available prior to system collapse. Lifetime functions provide a basis on which lifetime redundancy can be evaluated and its quantification can be formulated. The objective of this paper is to present a novel approach for the evaluation of the lifetime redundancy of structural systems. Measures of lifetime redundancy based on lifetime functions are investigated. The effects of maintenance on lifetime functions and redundancy are also presented. Furthermore, the lifetime redundancy is incorporated in a maintenance optimization algorithm. This optimization algorithm is illustrated on an existing highway bridge.

Suggested Citation

  • Okasha, Nader M. & Frangopol, Dan M., 2010. "Redundancy of structural systems with and without maintenance: An approach based on lifetime functions," Reliability Engineering and System Safety, Elsevier, vol. 95(5), pages 520-533.
    • Handle: RePEc:eee:reensy:v:95:y:2010:i:5:p:520-533
    DOI: 10.1016/j.ress.2010.01.003
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    References listed on IDEAS

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    1. Yang, Seung-Ie & Frangopol, Dan M. & Kawakami, Yoriko & Neves, Luís C., 2006. "The use of lifetime functions in the optimization of interventions on existing bridges considering maintenance and failure costs," Reliability Engineering and System Safety, Elsevier, vol. 91(6), pages 698-705.
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    Cited by:

    1. Barone, Giorgio & Frangopol, Dan M., 2014. "Reliability, risk and lifetime distributions as performance indicators for life-cycle maintenance of deteriorating structures," Reliability Engineering and System Safety, Elsevier, vol. 123(C), pages 21-37.
    2. Chou, Jui-Sheng & Le, Thanh-Son, 2011. "Reliability-based performance simulation for optimized pavement maintenance," Reliability Engineering and System Safety, Elsevier, vol. 96(10), pages 1402-1410.
    3. Okasha, Nader M. & Frangopol, Dan M. & Orcesi, André D., 2012. "Automated finite element updating using strain data for the lifetime reliability assessment of bridges," Reliability Engineering and System Safety, Elsevier, vol. 99(C), pages 139-150.

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