A Structural articulation method for assessing railway bridges subject to dynamic impact loading from track irregularities

David Lilley, Gunmo Gu, Francis Franklin

    Research output: Contribution to journalArticle

    Abstract

    This paper discusses the importance of track irregularities in railway bridge design, and presents a new technique for calculating the dynamic impact load induced by such irregularities: the structural articulation method. The properties of the combined bridge-suspension system are coupled through global mass, stiffness, and damping matrices. Under the proposed method, the true suspension system over a particular point on the bridge girder at time t is divided into equivalent suspension systems attributed to adjacent finite-element nodes of the bridge. The time-dependent effects of a moving mass are thereby included in the equation of motion.
    Original languageEnglish
    Pages (from-to)1077-1095
    Number of pages19
    JournalVehicle System Dynamics
    Volume48
    Issue number10
    Early online date13 May 2010
    DOIs
    Publication statusPublished - Oct 2010

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