ABSTRACT
ABSTRACT: The dynamics of bridges has been followed since the construction of the first railway bridges, the effects of steam locomotives up to the sleeper and cross girder effects. The basic dynamic characteristics of bridges (natural frequencies and damping) are represented in figures. The resonant vibration has occurred on bridges under high speed trains in recent time which awake the intensive vibration as well as the necessity to assess the bridges at fatigue. The possibilities of the bridge damping are discussed.
