Characteristic dynamic traffic load effects in bridges

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Show simple item record O'Brien, Eugene J. Rattigan, Paraic González, Arturo Dowling, Jason Znidaric, Ales 2010-11-10T15:05:32Z 2010-11-10T15:05:32Z 2009 Elsevier Ltd. en 2009-07
dc.identifier.citation Engineering Structures en
dc.identifier.issn 0141-0296
dc.description.abstract When formulating an approach to assess bridge traffic loading with allowance for Vehicle-Bridge Interaction (VBI), a trade-off is necessary between the limited accuracy and computational demands of numerical models and the limited time periods for which experimental data is available. Numerical modelling can simulate sufficient numbers of loading scenarios to determine characteristic total load effects, including an allowance for VBI. However, simulating VBI for years of traffic is computationally expensive, often excessively so. Furthermore, there are a great many uncertainties associated with numerical models such as the road surface profile and the model parameter values (e.g., spring stiffnesses) for the heavy vehicle fleet. On site measurement of total load effect, including the influence of VBI, overcomes many of these uncertainties as measurements are the result of actual loading scenarios as they occur on the bridge. However, it is often impractical to monitor bridges for extended periods of time which raises questions about the accuracy of calculated characteristic load effects. Soft Load Testing, as opposed to Proof Load or Diagnostic Load Testing, is the direct measurement of load effects on bridges subject to random traffic. This paper considers the influence of measurement periods on the accuracy of soft load testing predictions of characteristic load effects, including VBI, for bridges with two lanes of opposing traffic. It concludes that, even for relatively short time periods, the estimates are reasonably accurate and tend to be conservative. Provided the data is representative, Soft Load Testing is shown to be a useful tool for calculating characteristic total load effect. en
dc.description.sponsorship Other funder en
dc.format.extent 1669954 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.rights All rights reserved en
dc.subject Soft load testing en
dc.subject Vehicle bridge interaction en
dc.subject Weigh-in-motion en
dc.subject Bridge en
dc.subject Dynamic en
dc.subject Vibration en
dc.subject.lcsh Bridges--Live loads en
dc.subject.lcsh Bridges--Materials--Dynamic testing en
dc.title Characteristic dynamic traffic load effects in bridges en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.status Peer reviewed en
dc.identifier.volume 31 en
dc.identifier.issue 7 en
dc.identifier.startpage 1607 en
dc.identifier.endpage 1612 en
dc.identifier.doi 10.1016/j.engstruct.2009.02.013
dc.neeo.contributor O'Brien|Eugene J.|aut|
dc.neeo.contributor Rattigan|Paraic|aut|
dc.neeo.contributor González|Arturo|aut|
dc.neeo.contributor Dowling|Jason|aut|
dc.neeo.contributor Znidaric|Ales|aut|
dc.description.othersponsorship European 6th Framework Project ARCHES (Assessment and Rehabilitation of Central European Highway Structures) en
dc.description.admin au, ke - AS 04/11/2010 en
dc.internal.rmsid 92773042

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