engleski

The impact of tram motion on the vibration intensity of the tram track

The paper deals with the investigation of the vibration intensity of the tram track resulting from the passing of five different tram vehicle types. The study was performed on the new tram track built on the continuous reinforced concrete base closed with prefabricated reinforced concrete plates. The rails are continuously welded and laid on the supports placed at 100cm distance. The web and the foot of the rail are embedded in elastomeric materials. Tram track construction described above is usually applied in the very important urban areas of the city of Zagreb where the road and tram vehicles share the same traffic surface. In Croatia there are no verified regulations in the vibration field, so the investigation was carried out according to the German DIN 4150 standard. According to DIN 4150, the vibration intensity is defined by the coefficient KB (the equal perception value) determining the impact of vibrations on human body and buildings. The frequency spectrums of vibrations are determined for the evaluation of vibration intensity at the moment of maximal measured vibrations for each tram pass. The investigation results were used to define the effects of individual tram types on the vibration intensity of the tram track and to undertake necessary measures to reduce vibration impact on human body and surrounding buildings.

tram vehicle; tram track; vibration intensity; the equal perception value (KB)

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