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IDENTIFICATION OF VEHICLE AXLE LOADS FROM BRIDGE DYNAMIC RESPONSES

โœ Scribed by X.Q. ZHU; S.S. LAW

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
279 KB
Volume
236
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

A method is presented to identify moving loads on a bridge deck modelled as an orthotropic rectangular plate. The dynamic behavior of the bridge deck under moving loads is analyzed using the orthotropic plate theory and modal superposition principle, and Tikhonov regularization procedure is applied to provide bounds to the identi"ed forces in the time domain. The identi"ed results using a beam model and a plate model of the bridge deck are compared, and the conditions under which the bridge deck can be simpli"ed as an equivalent beam model are discussed. Computation simulation and laboratory tests show the e!ectiveness and the validity of the proposed method in identifying forces travelling along the central line or at an eccentric path on the bridge deck.

2000 Academic Press

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