A general multi‐axle vehicle model to study the bridge‐vehicle interaction

Mario Fafard (Civil Engineering Department, Laval University, Québec City, Canada)
Mallikarjuna Bennur (Civil Engineering Department, Laval University, Québec City, Canada)
Marc Savard (Structural Engineering Division, Ministry of Transportation, Québec City, Canada)

Engineering Computations

ISSN: 0264-4401

Publication date: 1 August 1997


Develops a general five‐axle vehicle model to study the dynamic interactions between the moving mass and the bridge structural components. Two‐axle, three‐axle, or four‐axle sprung loads, and the limiting load conditions such as a moving constant force, a moving alternating force, a moving unsprung mass, and combinations thereof, can be treated as special cases of the more general case presented. Further, its integration with the versatile finite element modelling has enhanced the practical applicability of such a theoretical development. The physical characteristics of the bridge and the vehicle, such as the bridge geometry, mechanical properties, profile of the road surface, the vehicle parameters including the distance between axles, leaf springs suspension and the total weight, are considered explicitly in the present model. The dynamic equations of equilibrium in time are integrated using the Newmark integration scheme. Verifies the accuracy of the algorithm by comparing the numerical results obtained from the present formulation with the experimental results.



Fafard, M., Bennur, M. and Savard, M. (1997), "A general multi‐axle vehicle model to study the bridge‐vehicle interaction", Engineering Computations, Vol. 14 No. 5, pp. 491-508. https://doi.org/10.1108/02644409710170339

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Copyright © 1997, MCB UP Limited

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