Investigation of transmission of pedestrian-induced vibration into a vibration-sensitive experimental facility
Nyawako, S; Reynolds, P; Hudson, E
Date: 3 June 2017
Publisher
Springer / Society for Experimental Mechanics
Publisher DOI
Abstract
This paper is based on field measurements that were undertaken in a facility housing ultra-low level vibration
sensitive equipment. The aim of these tests was to better understand the vibration transmission from an overhead
pedestrian footbridge to a pile supported experimental floor and the supported vibration sensitive equipment.
The ...
This paper is based on field measurements that were undertaken in a facility housing ultra-low level vibration
sensitive equipment. The aim of these tests was to better understand the vibration transmission from an overhead
pedestrian footbridge to a pile supported experimental floor and the supported vibration sensitive equipment.
The results of experimental measurements to estimate the as-built modal properties (natural frequencies, modal
damping ratios and mode shapes) of the footbridge structure are presented as well as response measurements
at selected locations on the footbridge and experimental floor from controlled walking tests. These series of measurements
indicate that vibrations are transmitted from the footbridge to the experimental floor as well as to the
supported equipment. This is verified through transmissibility checks which also indicate that vibrations from the
experimental floor are transmitted onto the supported equipment over the frequency bandwidth considered. The
assessment of vibration levels using vibration criteria curves for response measurements on the experimental floor
and the supported equipment for ambient (quiet conditions) and controlled walking excitations on the footbridge
structure are also provided
Engineering
Faculty of Environment, Science and Economy
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