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Axle Load Identification of Moving Vehicles Based on Influence Lines of Bridge Bending Moment

Axle Load Identification of Moving Vehicles Based on Influence Lines of Bridge Bending Moment Abstract This research aims at the identification of time varying axle load of moving vehicles though the determinations of influence lines of bridge bending moment.With the approach of this research, based on the theorem of modal superposition, the modal acceleration of the bridge subjected to moving loads is determined by the responding acceleration data of the sections. At any given time, the dynamic moment at a section is considered as a static moment due to the distributed inertia force and moving loads on the bridge. By using the bending moment influence line of the bridge, the relationship between the moments and the moving load is established. A method for identifying the moving loads though the bending moment influence lines is thus developed.With the application of the matrix singularity, there is no need to solve for dynamic equations and ill-conditioned matrix, and thus the proposed method is highly effcient for engineering applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nonlinear Engineering de Gruyter

Axle Load Identification of Moving Vehicles Based on Influence Lines of Bridge Bending Moment

Nonlinear Engineering , Volume 3 (3) – Sep 1, 2014

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References (16)

Publisher
de Gruyter
Copyright
Copyright © 2014 by the
ISSN
2192-8010
eISSN
2192-8029
DOI
10.1515/nleng-2014-0004
Publisher site
See Article on Publisher Site

Abstract

Abstract This research aims at the identification of time varying axle load of moving vehicles though the determinations of influence lines of bridge bending moment.With the approach of this research, based on the theorem of modal superposition, the modal acceleration of the bridge subjected to moving loads is determined by the responding acceleration data of the sections. At any given time, the dynamic moment at a section is considered as a static moment due to the distributed inertia force and moving loads on the bridge. By using the bending moment influence line of the bridge, the relationship between the moments and the moving load is established. A method for identifying the moving loads though the bending moment influence lines is thus developed.With the application of the matrix singularity, there is no need to solve for dynamic equations and ill-conditioned matrix, and thus the proposed method is highly effcient for engineering applications.

Journal

Nonlinear Engineeringde Gruyter

Published: Sep 1, 2014

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