地震発生時におけるエスカレータの挙動に関する研究

抄録

In Great East Japan Earthquake in 2011, fall accidents of escalators occurred. In the fall accidents, the escalators connected the third floor and the second floor. These occurred in commercial facilities of steel frame buildings. In general escalators are set on beams of buildings without fixation. The cause of the fall accidents was that the escalators came off from the beams of the buildings by the great earthquake more than expected. After the escalator accidents, the quake resistance standard was revised in Japan. According to this standard, the layer displacement of buildings to be expected during earthquake is more than before. However, it is considered that a non-fixed part of an escalator collides with abeam of a building by an earthquake. In addition, the collision may give compression and residual displacement to the escalator. Therefore, the purpose of this study is to grasp dynamic behavior of an escalator at earthquake which considers impact with the beam. In this paper, behavior of an escalator during earthquakes is confirmed using the 3/10 escalator model.