Type

Journal Article

Authors

Eugene J. O'Brien
C. Rowley
Arturo González

Subjects

Engineering

Topics
noise vehicle force bridge weigh in motion bridge dynamics bridges live loads mathematical models weigh in motion strain inverse dynamics

A general solution to the identification of moving vehicle forces on a bridge (2008)

Abstract Bridge Weigh-In-Motion systems measure bridge strain caused by the passing of a truckto estimate static axle weights. For this calculation, they commonly use a staticalgorithm that takes the bridge influence line as reference. Such a technique relies onadequate filtering to remove bridge dynamics and noise. However, filtering can lead tothe loss of a significant component of the underlying signal in bridges where thevibration does not have time to complete sufficient number of cycles, and in cases ofclosely spaced axles traveling at high vehicle speeds. In order to overcome theselimitations and also to provide additional information on the dynamics of the appliedforces, this paper presents an algorithm based on first order Tikhonov regularization and dynamic programming. First, strain measurements are simulated using an elaborate 3-D vehicle and orthotropic bridge interaction system. Then, strain is contaminated with noise and input into the moving force identification algorithm. The procedure to implement the algorithm and to derive the applied forces from the simulated strain record is described. Vehicle axle forces are shown to be accurately predicted for smooth and rough road profiles and a range of speeds.
Collections Ireland -> University College Dublin -> Critical Infrastructure Group Research Collection
Ireland -> University College Dublin -> Interdisciplinary Centres & Research Groups
Ireland -> University College Dublin -> Civil Engineering Research Collection
Ireland -> University College Dublin -> College of Engineering & Architecture
Ireland -> University College Dublin -> Critical Infrastructure Group
Ireland -> University College Dublin -> School of Civil Engineering

Full list of authors on original publication

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

Experts in our system

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