Development of an Analytical Model to study Railway Track Dynamics for the calculation of Vibration Levels arising from the Passage of Rail Vehicles

摘要

The present paper presents the development of a numerical model designed for thernprediction of vibrations generated by wheel-rail contact, caused fundamentally byrnwheel profile irregularities. The knowledge of vibration levels due to the passage ofrna train is important for the design and implementation of new underground railwayrntracings, especially for the study of the environmental impact and for the selection ofrna suitable fixation of the track. In some railway networks, the train moves along arntrack supported by an intermediate concrete slab. In this sense, an analytical wheelrailrnmodel is presented, which includes the impedance and the dynamic behavior ofrnthe concrete slab, with the aim to determine the interaction of the slab with the track.rnThe global model allows studying the vibrations generated due to the passage of arntrain, and investigating the influence of the components and railway fixations in therngeneration and attenuation of vibrations.