踏切衝突事故における乗客安全性の解析的検討

抄録

The crash safety structure of the railway vehicles is effective as one of the safety measures against the passengers and the train crews in the event of a collision accident. However there is no standard for crash safety in Japan. In order to discuss guidelines for the crash safety design of the vehicle structure, it is important to grasp the impact deformation behavior of the railway carbody and passenger's injury degree in a collision accident. Therefore, we carried out finite element analyses of a level crossing accident with a dump-truck under various conditions (collision position, collision angle, collision speed and mass of the load on the dump-truck) and evaluated their results in terms of the mean deceleration of passenger's area (conformable to European standard), and the maximum deceleration of passenger's area and the secondary impact velocity of the passenger (North American standard). We also evaluated passenger's injury value by using crash-test dummy's FEM model. As a result of comparing these values, it was clarified that the secondary impact velocity was the most effective to evaluate passenger's safety.