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This paper deals with the linear dynamic response of a simply supported light (steel) bridge under a moving load-mass of constant magnitude and velocity including the effect of the centripetal and Coriolis forces, which always are neglected. The individual and coupling effect of these forces in connection with the magnitude of the velocity of the moving load are fully discussed using a solution method based on an author's older publication. A variety of numerical results allows us to draw important conclusions for structural design purposes.

This paper examines the effects of the surface deck irregularities on the dynamic response of a bridge, during the passage of a light or heavy vehicle. The authors especially try to find the effect of the shape, the size, and the position of an irregularity in connection with the length of the span of a bridge and the velocity of a vehicle. For this reason, two types of irregularity are considered. The first with an abnormal shape and the second with a normal shape. The authors also examine the effect on the dynamic response of a bridge of the position of an irregularity for different positions of a vehicle. Finally, they try to determine the effect of replacing the true vehicle by a model, consisting of one, two, or three moving loads connected with each other. The dynamic response of the bridge is calculated by modeling the bridge and the moving load separately and combining the models with an iterative procedure according to the known technique in use.

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