Keywords: turnout, quantitative, ESAH-M, ESAH-F, dynamic loads, velocity dependence, short-term characteristic, long-term characteristic.

The turnout is essential equipment for railways, which is also one of the infrastructural facilities of railways with the greatest demand. So far the dynamic loads on the crossing and the scuffing of the crossing have been analyzed qualitatively. Our research concentrates on the quantitative analysis of the dynamic loads on the basis of the present theory for impact loads by virtue of the numerous measured records taken with two measuring systems: (1) the electronic analysis system of the crossing - portable (ESAH-M) and (2) the electronic analysis systems of the crossing - vehicle (ESAH-F). The dynamic loads vary linearly with the velocity of the trains. With the help of the modeling of the velocity dependence, the various dynamic loads can be translated into comparable values. Subsequently, from the viewpoint of short-term characteristics the dynamic contact forces and the dynamic wheel forces act together as the total dynamic forces in the wheel-track vibration system. However, from the view of long-term characteristics the development of the dynamic contact force and the wheel force are quite different from each other.

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