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Benchmark footbridge for vibration serviceability assessment under the vertical component of pedestrian load
Authors
S Zivanovic
Publication date
22 January 2019
Publisher
'American Society of Civil Engineers (ASCE)'
Doi
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Abstract
This is the author accepted manuscript. The final version is available from American Society of Civil Engineers via the DOI in this recordData availability: the electronic format of the data used is available at www.warwick.ac.uk/go/civileng/crg/structures/publications/dataVibration serviceability criteria are governing the design and determining the cost of modern, slender footbridges. Efficient and reliable evaluation of dynamic performance of these structures usually requires a detailed insight into the structural behavior under human-induced dynamic loading. Design procedures are becoming ever more sophisticated and versatile, and for their successful use, a thorough verification on a range of structures is required. The verification is currently hampered by a lack of experimental data that are presented in the form directly usable in the verification process. This study presents a comprehensive experimental data set acquired on a box-girder footbridge that is lively in the vertical direction. The data are acquired under normal operating conditions and are presented using a range of descriptors suitable for easy extraction of desired information. This will allow researchers and designers to use this bridge as a benchmark structure for vibration serviceability checks under the vertical component of the pedestrian loading. In addition, capabilities of a sophisticated force model (developed for walking over rigid surfaces) to predict vibrations on this lively bridge are investigated. It was found that there are discrepancies between computed and measured responses. These differences most likely are a consequence of the pedestrian-structure interaction on this lively bridge. The interaction was then quantified in the form of pedestrian contribution to the overall damping of the human-structure system. © 2012 American Society of Civil Engineers.Engineering and Physical Sciences Research Council (EPSRC
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Last time updated on 31/01/2019