Characteristics of Compression Wave generated by a High-speed Train entering Tunnel

概要

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When a high-speed train enters a tunnel, a compression wave at the inlet of the tunnel is generated ahead of the train and propagates along the tunnel. When this wave attains the outlet of the tunnel, part of it is emitted outward from the outlet as an impulsive noise. Entry compression waves are measured in actual Shinkansen tunnels. The effects of the shape of train head and structure of the track are clarified. Furthermore, the propagating compression waves are measured at plural locations in the tunnel and characteristics of compression wave propagated along the tunnel are clarified.
九州大学の論文