Abstract
In recent years, lifting distance of elevators to be installed in a building got longer due to high-rise building, thus elevator rope is longer. Therefore, the natural period of the elevator rope increases and gets closer to the natural period of buildings. As a result, the elevator rope hooked to the equipment of shaft when the rope vibrates by earthquakes. Therefore, secondary disasters such as entrapment and elevator service stop may occur, it has became a problem. For example, The Great East Japan Earthquake in 2011, 2125 cases of problems such as catch and damage of elevator ropes have been reported. In addition, rope entanglement and entrapment occur in high-rise buildings in Osaka, 700 kilometer away from the seismic center. Therefore, it is necessary to analyze the behavior of the elevator rope vibration. Each of manufacturers has own analysis techniques, but its key techniques are usually secret. Thus integrative comparison among various manufacturers is difficult. Therefore, the present study aimed at construction of the elevator ropes analysis model, which can be applied to any elevator. In this report, we investigate the behavior of elevator ropes of each tension and linear density.
