Human induced vibration of staircases: Measurements and analysis

Conference paper


Kraincanic, I. and Sparkes, A. (2019). Human induced vibration of staircases: Measurements and analysis. Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation (SEMC 2019). Cape Town 02 - 04 Sep 2019 CRC Press - Taylor and Francis Group. doi:10.1201/9780429426506
AuthorsKraincanic, I. and Sparkes, A.
TypeConference paper
Abstract

While there are numerous design guidelines for oscillations of floors, staircases have received comparatively less attention. Dynamic testing of existing staircases can improve understanding of their behaviour and lead to more accurate methods for predicting accelerations in service. This study uses a smartphone device to measure oscillations of a helical staircase. The smartphone accelerometer’s output was compared to the output of a la-boratory accelerometer and in the range of frequencies relevant to this study the differences were negligible. A helical staircase was tested in heel drop and walking tests to find natural frequencies and damping of a staircase. Computer analysis results for natural frequencies were in good correlation with the measured data. The results of footfall analysis showed that despite a relatively high fundamental frequency of the staircase, its response factor exceeded the one prescribed by the design guidelines. Footfall analysis results depend criti-cally on the correct estimate of the damping ratio. The actual damping ratio was found to be higher than the one in guidance documents.

Year2019
PublisherCRC Press - Taylor and Francis Group
Digital Object Identifier (DOI)doi:10.1201/9780429426506
Web address (URL)https://www.taylorfrancis.com/books/9780429426506
Accepted author manuscript
License
CC BY 4.0
File Access Level
Open
Publication dates
Print21 Aug 2019
Publication process dates
Deposited24 Oct 2019
Permalink -

https://openresearch.lsbu.ac.uk/item/883qx

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