Dynamic load on continuous multi-lane bridge deck from moving vehicles.

Xinqun Zhu, S.S. Law

    Research output: Contribution to journalArticlepeer-review

    83 Citations (Scopus)


    The dynamic loading on a multi-lane continuous bridge deck due to vehicles moving on top at a constant velocity is investigated. The bridge is modelled as a multi-span continuous orthotropic rectangular plate with line rigid intermediate supports. The vehicle is simulated as a two-axle three-dimensional vehicle model with seven degrees of freedom according to the H20-44 vehicle design loading (4.4SHTO LRFD Bridge Design Specifications 1998 American Association of State Highway and Transportation Officials [1]). The dynamic behavior of the bridge deck under single and several vehicles moving in different lanes is analyzed using the orthotropic plate theory and modal superposition technique. The dynamic loading is studied in terms of the dynamic impact factor of the bridge deck. The impact factor is found varying in an opposite trend as the dynamic responses for the different loading cases under study. (C) 2002 Elsevier Science Ltd.
    Original languageEnglish
    Pages (from-to)697-716
    JournalJournal of Sound and Vibration
    Issue number4
    Publication statusPublished - 2002


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