Abstract
Structures such as noise-barrier walls along high-speed railway lines are subject to
aerodynamic excitations caused by alternating overpressure and underpressure loads
induced by passing trains. This paper presents the results from holistic investigations
during in-situ measurements at a new train high speed track in Austria. Trains
moving quickly create an aerodynamic bow wave, comprised of a rapid alternation
of overpressures and underpressures, as well as an aerodynamic stern wave,
comprised of a rapid alternation of underpressures and overpressures. The amplitude
of these waves depends on various factors, including the shape of the front and the
back of the train and its velocity. A passing train thus causes cycles of overpressure
and underpressure to act on any structures near the track, such as noise-barrier walls.
The intensity of the load also depends on various factors, including the distance of
the wall from the track. These effects cause cyclical stresses at a frequency of
several per second. Due to the significant influence of the trains´ aerodynamic
shape, in-situ measurements for the determination of the aerodynamic impact of
different train types were carried out. The test bed area was located between Vienna
and St. Pölten, maximum speed drives were operated by ICE trains with a measured
train velocity of 336km/h. In this paper the functional correlation between the
dynamic excitation and the dynamic characteristics of noise barrier walls are
discussed.
Originalsprache | Englisch |
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Titel | Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing |
Seitenumfang | 1 |
Publikationsstatus | Veröffentlicht - 2013 |
Veranstaltung | CC 2013 - Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing - Dauer: 3 Sept. 2013 → 6 Sept. 2013 |
Konferenz
Konferenz | CC 2013 - Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing |
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Zeitraum | 3/09/13 → 6/09/13 |
Research Field
- Ehemaliges Research Field - Mobility Systems
Schlagwörter
- aerodynamic pressures
- noise barriers
- high speed trains