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.


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    Title :

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


    Contributors:
    Gu, G. (author) / Lilley, D. M. (author) / Franklin, F. J. (author)

    Published in:

    Vehicle System Dynamics ; 48 , 10 ; 1077-1095


    Publication date :

    2010-10-01


    Size :

    19 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown