Numerical simulation of train-bridge interactive dynamics

In this paper, the space model for train carriages is developed and introdu ced in dynamic analysis of train-bridge interaction. The rail irregularitie s described by the power spectral density functions are generated by invers e Fourier transformation. The equations of motion of train-bridge systems a re derived and reduced to simulate the dynamic responses of bridges under m oving trains. The Newmark's beta integration method is adopted to serve the non-linear coupling equations. Numerical examples show that the method of this paper has high accuracy in simulating train-bridge interactive dynamic s, (C) 2001 Elsevier Science Ltd. All rights reserved.