Type

Conference Proceedings

Authors

Bernard Enright
Emma Sheils
Eugene J. O'Brien
Donya Hajializadeh

Subjects

Engineering

Topics
spatial traffic probabilistic bridge load effect safety random field spatial variability load variable

Spatially Variable Assessment of Lifetime Maximum Load Effect Distribution in Bridges (2012)

Abstract Bridge structures are key components of highway infrastructure and their safety is clearly of great importance. Safety assessment of highway bridges requires accurate prediction of the extreme load effects, taking account of spatial variability through the bridge width and length. This concept of spatial variability i s also known as random field analysis. Reliability - based bridge assessment permits the inclusion of uncertainty in all parameters and models associated with the deterioration process. Random field analysis takes account of the probability that two points n ear each other on a bridge will have correlated properties. This method incorporates spatial variability which results in a more accurate reliability assessm ent. This paper presents an integrated model for spatial reliability analysis of reinforced concre te bridges that considers both the bridge capacity and traffic load. A sophisticated simulation model of two - directional traffic is used to determine accurate annual maximum distributions of load effect. To generate the bridge loading scenarios, an extensi ve Weigh-in-Motion (WIM) database, from five European countries, is used. For this, statistical distributions for vehicle weights, inter - vehicle gaps and other characteristics are derived from the measurements, and are used as the basis for a Monte Carlo simulation of traffic. Results are presented for bidirectional traffic, with one lane in each direction, with a total flow of approximately 2000 trucks per day.
Collections Ireland -> University College Dublin -> Civil Engineering Research Collection

Full list of authors on original publication

Bernard Enright, Emma Sheils, Eugene J. O'Brien, Donya Hajializadeh

Experts in our system

1
Bernard Enright
University College Dublin
Total Publications: 39
 
2
Emma Sheils
Dublin Institute of Technology
Total Publications: 5
 
3
Eugene J. O'Brien
University College Dublin
Total Publications: 192
 
4
Donya Hajializadeh
University College Dublin
Total Publications: 16