Dynamic loads effects on the characteristics of compressive monocable chairlift towers

Abstract

Passage of the grip over chair lift compression battery is followed by a series of tower trembles. On that very moment grip has contact with the wheel, passing under the wheel and then lost the contact. The consequences of this phenomenon on the tower structure are not researched well. This paper research the behavior of not real, but pre-installed structures in real operational conditions. In laboratory conditions, initiative load represents a combination of several basic types of signals. In the research carried out under real conditions, the initiative load was very complex. The possibilities of modeling complex nature of real initiative with satisfy acceptability, were used. The passage of the chair causes a forced damped vibration, which can have stress implications. The paper describes complex identification of initiative, analysis of the oscillation types of the tower structure, as well as correlated relations of the initiative excitation and tower stress response.