Abstract
Parametric effect on bidirectional moving vehicle load identification from plate bridge responses is studied in this paper. The equation of motion of a plate bridge-bidirectional vehicle system is formulated based on Hamilton principle and is rewritten in a state space form, the bidirectional moving load identification problem is considered as a damped least-squares problem and further solved with the regularization method. Finally, the effect of parameters on identification accuracy is investigated in order to evaluate the effectiveness and robustness of the bidirectional moving load identification method proposed in a companion paper. Some numerical simulations show that the proposed method is correct and effective for identifying the bidirectional moving vehicle loads from bridge responses with an acceptable accuracy, but the selection of parameters should be carefully considered in the identification process.
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