ロープ挙動解析による昇降機耐震設計評価手法の高度化に関する研究

抄録

In recent years, elevators to be installed in the building by the high-rise buildings are long stroke, thus elevator ropes are longer. Consequently, the natural period of elevator rope increases and gets closer to the natural period of buildings. As a result, the elevator rope hooked to the equipment of shaft wall when the elevator rope vibrates by an external force, such as an earthquake or wind. Secondary damage such as containment of passenger and elevators service stop may occur. It has become a problem. For example, The Great East Japan Earthquake in 2011, 2015cases of problem such as catch and damage of elevator ropes have been reported. Therefore, it is necessary to analyze the behavior of the elevator rope vibration in order to prevent hooked of the rope. Analysis of the elevator rope is carried out in each manufacturer. Each manufacturer has own analysis techniques. Consequently, unified evaluation and comparison is difficult. Therefore, this study is aimed at construction of analysis techniques that can be unified evaluation and comparison of the elevator rope. In this report, we examine the behavior of the elevator rope in consideration of the collision when changing the tension.