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The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models

The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Po...

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Main Author: Mullarney, Brian
Format: Other
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2013
Subjects:
Footbridges
Engineering technologies
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/30837
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spelling my.unimap-308372013-12-24T13:58:23Z The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models Mullarney, Brian Footbridges Engineering technologies The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Postgraduates Student Association Ireland (MyPSI), 18th - 19th June 2012 at Putra World Trade Center (PWTC), Kuala Lumpur, Malaysia The emergence of new materials, the greater understanding of existing ones, and the evolution of advanced engineering technologies have jointly facilitated the structural engineer to design footbridges more slender, lighter, and more aesthetically daring than ever before. These new slim-line and elegant footbridges are typically quite flexible and lightweight, often rendering them sensitive to pedestrian induced vibrations vertically and/or laterally (perpendicular to the direction of bridge span). Essentially, such vibrations often arise because many footbridges have natural frequencies coinciding with the pacing frequency of crossing pedestrians, hence increasing the risk of resonance [1-3]. These unwanted vibrations can often cause discomfort for crossing pedestrians (themselves the producers of these vibrations), essentially meaning the bridge has failed in terms of serviceability; perhaps the most famous example of this occurred on the London Millennium Bridge (LMB) in 2000. According to [4] the cost to fix the problem on the LMB drove the final cost up by 30% - cost of construction was €48 million, quoted as a 2010 equivalent by [5]. Intuitively, if the structural engineer during the design stage could determine the vibration response (usually measured in terms of acceleration) of the bridge due to crossing pedestrians then instances that occurred with the LMB would become less common. However, in order to accurately predict any responses quantitative and qualitative data and knowledge is required on the following: (a) forces induced by crossing pedestrians and what influences such forces; (b) pedestrian-pedestrian interaction and the synchronisation of crossing pedestrians; (c) the pedestrian-structure interaction of crossing pedestrians; (d) the determination of what an acceptable response limit/range should be. Unfortunately, there is currently a dearth of reliable data regarding a, b, and c; and huge reported variations regarding d, rendering if quite difficult for the structural engineer to come up with a solution during the design stage. Furthermore, the response models within the current international guidelines are deficient; as input data is lacking. Hence, the ultimate objective of the research project is to provide the structural engineer with advanced models in order to calculate the vibration response of any bridge due to crossing pedestrians. Such models will be developed and useable probabilistically. In order for this objective to be met a, b, and c highlighted in the introduction shall be determined 2013-12-24T13:58:23Z 2013-12-24T13:58:23Z 2012-06-18 Other p. 1281 978-967-5760-11-2 http://hdl.handle.net/123456789/30837 en The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012); Universiti Malaysia Perlis (UniMAP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Footbridges
Engineering technologies
spellingShingle Footbridges
Engineering technologies
Mullarney, Brian
The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
description The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Postgraduates Student Association Ireland (MyPSI), 18th - 19th June 2012 at Putra World Trade Center (PWTC), Kuala Lumpur, Malaysia
format Other
author Mullarney, Brian
author_facet Mullarney, Brian
author_sort Mullarney, Brian
title The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
title_short The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
title_full The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
title_fullStr The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
title_full_unstemmed The influence of pedestrian loading on footbridges: An endeavour to improve the accuracy of response models
title_sort influence of pedestrian loading on footbridges: an endeavour to improve the accuracy of response models
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2013
url http://dspace.unimap.edu.my/xmlui/handle/123456789/30837
_version_ 1643796391476068352
score 13.223943

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