Journal Article


J. Kirkpatrick
K. M. Butler
T. D. Sloan
Eugene J. O'Brien



regression analysis traffic loading bridge loads load effects bridge assessment statistical distribution simple regression traffic load

Traffic Loading 'Fingerprinting' of Bridges of Assessment Purposes (1995)

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.
Collections Ireland -> University College Dublin -> Civil Engineering Research Collection
Ireland -> University College Dublin -> College of Engineering & Architecture
Ireland -> University College Dublin -> School of Civil Engineering

Full list of authors on original publication

J. Kirkpatrick, K. M. Butler, T. D. Sloan, Eugene J. O'Brien

Experts in our system

Eugene J. O'Brien
University College Dublin
Total Publications: 192