Summary This paper considers track vibrations induced by high-speed trains, both in a tunnel on slab track and at grade on ballasted track. In particular, some of the characteristic frequencies present are investigated. These include speed-dependent parametric excitation frequencies related to the geometry of the system, for instance the rate with which bogies and axles pass above a given position in the track, or with which a wheel passes over the fasteners, also speed-independent system aspects such as the loaded track vibration resonance are considered. The circumstances under which these characteristic frequencies are most likely to coincide on high-speed rail systems are considered. Some conclusions are drawn on optimal range for the loaded track resonance and the optimal track stiffness range under different train speeds required to provide this.
High-Speed Rail: Excitation Frequencies and Track Stiffness
2012-01-01
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
High-Speed Rail: Excitation Frequencies and Track Stiffness
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