地震時におけるエスカレータトラスの残存強度に関する研究

抄録

Four fall accidents of escalators utilized in three shopping centers occurred during Greatest East Japan Earthquake in 2011. Based on the fall accidents, the quake-resistance standard of the escalator was revised in Japan. In the new quake-resistance standard, inter-story deflection assumed during earthquakes was set larger than before. It is conceivable that an existing escalator receives compressive load from a building. Therefore, it is necessary to investigate how the escalator truss behaves due to compressive load. From the above background, this study builds a finite element analysis model of the escalator truss that is subjected to compressive load based on results of a compression experiment of the escalator trusses of actual machine size. The validity of the analysis model is investigate by comparing with the compressive experiment of the escalator truss of the actual size.