軌条輪上での実台車加振実験による鉄道車両の地震時脱線メカニズムの検証

抄録

The derailment mechanism for when earthquakes occur has been verified in vibration bench tests and simulations in the past. However, in the past full-scale vibration bench tests including ours, the wheels did not rotate. The aims of this study are to verify the derailment mechanism in case that the railway vehicle running at a high speed is vibrated by a large lateral displacement of track during earthquakes, and to reconfirm the past other verifications. In order to realize this aim, we conducted the full-scale vibration tests with an actual series N700 bogie on roller rigs by use of the rolling stock field test simulator. This apparatus enables to simulate running tests with one or half rolling stock on roller rigs which can experience a considerable degree of horizontal displacement. As a result of this vibration test with an actual bogie on roller rigs, we were able to confirm the influence of wheel rotation on the wheel lift motion, the anti-derailing guard rail acting on a rotating wheel, and so on.