AM06-16-009 列車突入によるトンネル内圧縮波の概算法(第2報)(波動・音・衝撃波(3),一般講演)

概要

論文の詳細を見る
When a train entering a tunnel at high speed, a compression wave is generated ahead of the train and propagates through the tunnel. At the tunnel exit, the wave radiates toward the outside of the tunnel as an impulsive pressure wave (micro-pressure wave). It is reported that the magnitude of the micro-pressure wave is proportional to the steepness of the wavefront of the compression wave at the tunnel exit. Therefore, it is necessary to reduce the pressure gradient of the compression wave for weakening of the micro-pressure wave. We investigate the relationship between the condition of the train and the waveform of the compression wave. The parameters that depend on the train nose shape and train speed are derived from the similarity rules. We propose an estimating method of waveform using these parameters in the wide speed range.
日本流体力学会の論文
2006-09-05