Headway modelling for traffic load assessment of short to medium span bridges
|Title:||Headway modelling for traffic load assessment of short to medium span bridges||Authors:||O'Brien, Eugene J.
Caprani, Colin C.
|Permanent link:||http://hdl.handle.net/10197/2313||Date:||16-Aug-2005||Online since:||2010-08-06T13:44:36Z||Abstract:||Site-specific assessment of the loading to which existing bridges are subject has considerable potential for saving on rehabilitation and replacement costs of the bridge stock. Monte Carlo simulations, with traffic measurements from site, are used to estimate the characteristic values for load effects. In this paper, it is shown that the critical loading events from which the characteristic effects are derived, are strongly dependent on the assumptions used for the headways of successive trucks. A new approach which uses measured headway statistical distributions is developed and is shown to be a reasonable balance between conservative assumptions and less realistic scenarios. The sensitivity of characteristic load effects to conventional headway assumptions is shown to be significant.||Funding Details:||European Research Council||Type of material:||Journal Article||Publisher:||Institution of Structural Engineers||Journal:||The Structural Engineer||Volume:||83||Issue:||16||Start page:||33||End page:||36||Copyright (published version):||2005 Eugene J. OBrien & Colin C. Caprani||Keywords:||Bridge; Assessment; Statistics; Headway; Gap; Load; Traffic; Simulation||Subject LCSH:||Bridges--Live loads
|Other versions:||http://www.istructe.org/thestructuralengineer/abstract.asp?ID=5494||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Critical Infrastructure Group Research Collection|
Civil Engineering Research Collection
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