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

  1. Lookup NU author(s)
  2. Dr Gunmo Gu
  3. Dr David Lilley
  4. Dr Francis Franklin
Author(s)Gu G, Lilley DM, Franklin FJ
Publication type Article
JournalVehicle System Dynamics
Year2010
Volume
Issue
Pages1-19 iFirst
ISSN (print)0042-3114
ISSN (electronic)1744-5159
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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.
PublisherTaylor & Francis
URLhttp://dx.doi.org/10.1080/00423110903337273
DOI10.1080/00423110903337273
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