DETERMINATION OF THE EFFECT OF RAIL/WHEEL VIBRATIONS ON RAILWAY DYNAMIC ON BALLASTED LINE

The classical method used in railway design is to increase the results in the ratio of dynamic effect coefficient in order to make static analysis and consider dynamic effects. however, it is known that this method is not available for high speed railway lines and that it is necessary to make dynamic analysis; as it is impossible, in classical method, to calculate the very high dynamic loads and the resonance which occurs when the natural frequencies of railway coincide with the driving frequencies of train. therefore, numerical analysis was made using ansys finite element program and the dynamic effects in resonance situation were determined for a sample ballasted line superstructure. besides, the natural frequencies and dynamic effects of the road were measured on the field, and the sample was validated in accordance with these values.