Lift guide rail – counterweight/car - suspension systems under seismic excitations: the dynamic behaviour and protection measures

Kaczmarczyk, S. (2017) Lift guide rail – counterweight/car - suspension systems under seismic excitations: the dynamic behaviour and protection measures. Lift and Escalator Symposium. 7 2052-7225.

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Item Type:	Article
Abstract:	Lift systems are susceptible to damage when building is subjected to strong earthquake motions. The counterweight - guide rail and car guide rail systems suffer from earthquake-induced vibrations. The most common mode of failure is the counterweight derailment. This paper reviews the dynamic phenomena and presents a model to study, to predict and to mitigate the effects of the seismic responses of guide rail – counterweight/ car – suspension systems. The application of a Tuned Mass Damper (TMD) is a convenient method to reduce the guide rail-counterweight/ car response and to control the system operating under seismic conditions. In the TMD arrangement vibrations of the counterweight/ car can be suppressed and the stresses in the guide rails reduced by the application of an auxiliary spring – damper - mass system attached to the main structure. In the counterweight system a part of the counterweight mass can be used as the auxiliary mass. The performance of the TMD can be improved by the application of an actuator force determined by a suitable feedback control algorithm.
Uncontrolled Keywords:	Guide rail, counterweight/car, seismic excitation, dynamic response, tuned mass damper
Creators:	Kaczmarczyk, Stefan
Editors:	Kaczmarczyk, Stefan and Peters, Richard
Faculties, Divisions and Institutes:	Faculties > Faculty of Arts, Science & Technology > Engineering
Date:	20 September 2017
Date Type:	Publication
Journal or Publication Title:	Lift and Escalator Symposium
Volume:	7
Number of Pages:	9
Language:	English
ISSN:	2052-7225
Status:	Published / Disseminated
Refereed:	Yes
Related URLs:	https://liftsymposium.org/ https://pure.northampton.ac.uk/en/public...
URI:	http://nectar.northampton.ac.uk/id/eprint/9883

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