Fundamental Study on Effectiveness Evaluation of Rope Response Reduction by Intermediate Transit Floor Using Risk Information

Elevators are essential for means of vertical transportation. Recently elevators, which are installed in high buildings, are long stroke. These elevator ropes are longer than conventional elevator ropes. The natural period of the elevator rope becomes longer for the long elevator rope. The natural period of the elevator rope gets closer to that of the building. The elevator ropes severely vibrate by the external force, such as strong winds and earthquakes. Accordingly, the division of lift stroke has been suggested for decrease of the rope response in the conventional research. The effectiveness of the lift stroke division has been confirmed by the investigation of the time history response analysis. However, the investigation of the optimum division position at the time history response analysis is taken tremendous effort. Accordingly, the simple design method of the optimum division position is necessary at the commencement of design. In this study, the simple decision procedure of the optimum division position is suggested. The optimum division position of the simple decision procedure is compared with the optimum division position of the time history response analysis. As a result, the calculation of the optimum division position is relatively simple and high precision. Furthermore, the sensitivity analysis of the simple decision procedure is carried out. As a result, the initial tension fluctuation has small influence against the optimum division position. Therefore, the simple decision procedure proposed in this study is effective method at the commencement of design.

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Proposal of simple decision procedure of optimum division position in long travel for vibration suppression of long component in elevator

Okamura¹,

FUJITA

Murata

et al. 2022

Transactions of the JSME (In Japanese)

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Fundamental Study on Effectiveness Evaluation of Rope Response Reduction by Intermediate Transit Floor Using Risk Information

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Proposal of simple decision procedure of optimum division position in long travel for vibration suppression of long component in elevator

Proposal of simple decision procedure of optimum division position in long travel for vibration suppression of long component in elevator

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