Realtime 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 a numerical evaluation of strains and deflections measured on steel suspension bridge in Kirjalansalmi in Finland to obtain the estimation of structure's fatigue life. The software developed in VTT calculates also weights, speeds and positions of passing vehicles from the measured data. The fatigue life prediction method uses pre-calculated stress ranges spectra in all joints from the finite element model calibrated to the results of test loads. Since the calculations run directly 011 the computer collecting strain gauges and deflections 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
    Subtitle of host publicationProceedings of the 7th International Conference of Bridge Maintenance, Safety and Management (IABMAS 2014)
    EditorsAirong Chen, Dan M. Frangopol, Xin Ruan
    PublisherCRC Press
    ISBN (Electronic)978-0-429-22716-5
    ISBN (Print)978-1-138-00103-9
    Publication statusPublished - 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


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