Real-time fatigue life evaluation of steel suspension bridge

Petr Hradil, Ilkka Hakola

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    The paper demonstrates an experimental case of suspension bridge in Kirjalansalmi, Finland, where the real-time evaluation of the steel structure fatigue life was applied. The method uses pre-calculated stress ranges spectra in all joints from the finite element model calibrated to the results of test loads. Since the calculation runs directly on the computer collecting strain gauges measurements, the amount of data to be transported to the central database could be reduced significantly. The on-site computer is also configured as web-server and the fatigue life results are automatically updated on its web-page daily. However, the most computationally demanding part is the stress-ranges evaluation that iterates the whole history of strain measurement dating back to 2011.
    Original languageEnglish
    Title of host publicationBridge Maintenance, Safety, Management and Life Extension
    EditorsAirong Chen, Dan M. Frangopol, Xin Ruan
    PublisherCRC Press
    Pages166- 71
    ISBN (Electronic)978-1-315-76069-8 , 978-0-429-22716-5
    ISBN (Print)978-1-138-00103-9
    Publication statusPublished - 27 May 2014
    MoE publication typeA4 Article in a conference publication
    Event7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014 - Shanghai, China
    Duration: 7 Jul 201411 Jul 2014


    Conference7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014
    Abbreviated titleIABMAS 2014


    • bridge
    • monitoring
    • fatigue
    • steel
    • suspension


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