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

Lookup NU author(s): Dr Gunmo Gu, Dr David Lilley, Dr Francis Franklin

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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.

Publication metadata

Author(s): Gu G, Lilley DM, Franklin FJ

Publication type: Article

Publication status: Published

Journal: Vehicle System Dynamics

Year: 2010

Pages: 1-19 iFirst

Print publication date: 13/05/2010

ISSN (print): 0042-3114

ISSN (electronic): 1744-5159

Publisher: Taylor & Francis

URL: http://dx.doi.org/10.1080/00423110903337273

DOI: 10.1080/00423110903337273

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