Type

Journal Article

Authors

Bernard Enright
Eugene J. O'Brien
Eugene J. OBrien

Subjects

Mathematics

Topics
bootstrap statistics traffic loading bridges live loads computer simulation kernel functions monte carlo method structural engineering kernel density estimators civil engineering bridge bootstrap monte carlo simulation

Modeling same-direction two-lane traffic for bridge loading (2011)

Abstract Many highway bridges carry traffic in two same-direction lanes, and modeling thetraffic loading on such bridges has been the subject of numerous studies. Differentassumptions have been used to model multiple-presence loading events, particularlythose featuring one truck in each lane. Using a database of weigh-in-motionmeasurements collected at two European sites for over 1 million trucks, this paperexamines the relationships between adjacent vehicles in both lanes in terms of vehicleweights, speeds and inter-vehicle gaps. It is shown that there are various patterns ofcorrelation, some of which are significant for bridge loading. A novel approach to theMonte Carlo simulation of such traffic is presented which is relatively simple to apply.This is a form of smoothed bootstrap in which kernel functions are used to addrandomness to measured traffic scenarios. It is shown that it gives a better fit to themeasured data than models which assume no correlation. Results are presented fromlong-run simulations of traffic using the different models and these show thatcorrelation may account for an increase of up to 8% in lifetime maximum loading.
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Full list of authors on original publication

Bernard Enright, Eugene J. O'Brien, Eugene J. OBrien

Experts in our system

1
Bernard Enright
University College Dublin
Total Publications: 39
 
2
Eugene J. O'Brien
University College Dublin
Total Publications: 192
 
3
Eugene J. OBrien
Dublin Institute of Technology
Total Publications: 24