Traffic Loading 'Fingerprinting' of Bridges of Assessment Purposes
|Title:||Traffic Loading 'Fingerprinting' of Bridges of Assessment Purposes||Authors:||O'Brien, Eugene J.
Sloan, T. D.
Butler, K. M.
|Permanent link:||http://hdl.handle.net/10197/4056||Date:||1995||Online since:||2013-01-16T17:35:48Z||Abstract:||The paper describes a field trial of the use of a simple statistical ‘extrapolation' technique for the determination of design load effects in existing bridges. Deflections were measured directly using lasers in the Foyle Bridge, and data were recorded for 155 daily 48-min samples. As only traffic load effects were of interest, wind-induced defections were removed by Fast Fourier transform analysis and temperature-induced deflections were removed through identification of traffic-free periods. A simple linear regression analysis using probability paper has been employed to determine the parameters which characterise the statistical distribution. The cumulative distribution function was then used to estimate the level of deflection with a 1000-year return period. Empirically derived formulas have been utilised to determine the variability in the 1000-year estimates and to calculate a design deflection which allows for this.||Type of material:||Journal Article||Publisher:||Institution of Structural Engineers||Journal:||The Structural Engineer||Volume:||73||Issue:||19||Start page:||320||End page:||324||Copyright (published version):||1995, The Institution of Structural Engineers||Keywords:||Bridge assessment; Bridge loads||Other versions:||http://www.istructe.org/journal/volumes/volume-73-%28published-in-1995%29/issues/issue-19/articles/traffic-load-fingerprinting-of-bridges-for-assessm||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Civil Engineering Research Collection|
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