Type

Journal Article

Authors

Arturo González
Eugene J. O'Brien
C. Rowley

Subjects

Engineering

Topics
bridge regularization bridge weigh in motion force identification weigh in motion traffic loads finite element method dynamic programming

Experimental Testing of a Moving Force Identification Bridge Weigh-in-Motion Algorithm (2008)

Abstract Bridge weigh-in-motion systems are based on the measurement of strain on a bridge and the use of the measurements to estimate the static weights of passing traffic loads. Traditionally, commercial systems employ a static algorithm and use the bridge influence line to infer static axle weights. This paper describes the experimental testing of an algorithm based on moving force identification theory. In this approach the bridge is dynamically modeled using the finite element method and an eigenvalue reduction technique is employed to reduce the dimension of the system. The inverse problem of finding the applied forces from measured responses is then formulated as a least squares problem with Tikhonov regularization. The optimal regularization parameter is solved using the L-curve method. Finally, the static axle loads, impact factors and truck frequencies are obtained from a complete time history of the identified moving forces.
Collections Ireland -> University College Dublin -> Earth Institute Research Collection
Ireland -> University College Dublin -> Institutes and Centres
Ireland -> University College Dublin -> UCD Earth Institute
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

Arturo González, Eugene J. O'Brien, C. Rowley

Experts in our system

1
Arturo González
University College Dublin
Total Publications: 106
 
2
Eugene J. O'Brien
University College Dublin
Total Publications: 192