Citation

Cai CS, Chen SR. J. Wind. Eng. Ind. Aerodyn. 2004; 92(7-8): 579-607.

Copyright

(Copyright © 2004, Elsevier Publishing)

DOI

10.1016/j.jweia.2004.03.007

PMID

unavailable

Abstract

This paper presents a framework of dynamic analysis of coupled three-dimensional vehicle-bridge system under strong winds. A general formulation of this system is introduced to simulate a series of vehicles consisting of different numbers and different types of vehicles running on bridges under hurricane-induced strong winds. Each vehicle is modeled as a combination of several rigid bodies, axle mass blocks, springs, and dampers, considering wind and road roughness loads. With this vehicle-bridge model, coupled dynamic analysis of vehicles running on bridges is conducted with a numerical example. Effects of driving speeds on the dynamic performance of the vehicles as well as the bridge are discussed. It is found that the driving speeds mainly affect the vehicle's vertical relative response while they have insignificant effect on the rolling response of vehicles. Vehicle's absolute response is dominated by the bridge response when wind speed is high, while it is dominated by road roughness when the wind speed is low. Detailed accident analysis of vehicles on bridges under strong winds will be reported in an accompanying paper.