Effects of Impact Loads on Local Dynamic Behavior of Orthotropic Steel Bridge Decks

摘要

To investigate the local dynamic behavior of orthotropic steel bridge decks under impact loads, this paper proposed a type of combined plate-beam element for analysis of trapezoidal stiffened plate and a type of 8-nodes solid-plate element for analysis of pavement. Besides, vehicle wheel loads are supposed to be triangular loads for convenience. Then, a model experiment was conducted to verify the accuracy of the proposed approach. Finally, River-sea-through channel of Hong Kong-Zhuhai-Macao Bridge is taken as an engineering case for computation analysis. The results are compared with those from FE software ANSYS. It shows that: first, the proposed approach is both accurate and efficient; second, bridge deck pavement has the effect of both self-weight and rigidity, which requires the bridge deck pavement be considered when analyzing the mechanical properties of bridge deck structure.

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