Citation

Gu G, Lilley DM, Franklin FJ. Veh. Syst. Dyn. 2010; 48(10): 1077-1095.

Copyright

(Copyright © 2010, Informa - Taylor and Francis Group)

DOI

10.1080/00423110903337273

PMID

unavailable

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.