| 摘要(英) |
As the traffic load increases tremendously nowadays, the pavement steel deck has played an important role. Its repetitive loading of the mechanical behavior is different from the general road pavement. Therefore, this research aims to investigate with finite element as its mechanical basis, along with the finite element analytic software “ABAQUS” as the computing device. The research observes the mechanical behavior of the steel deck after loading under different circumstances such as the steel deck’s loading type, loading position, and pavement materials. Last, the paper investigates and observes different failure parameters in order to further understand the failure factors of the steel deck.
The conclusion of the analysis indicates, (1) the loading of tandem axles with dual tires can be simplified as the single axle with dual tires and analyzed with superposition. (2) The pavement would produce larger MPE-T easily when the lower part of the loading is without rib. (3) The E33-C would increase, as the center of the tire print gets closer to the support, it would produce even larger E33-C if the support of the tire print center were formed with floor beam. (4) The study indicates that the best allocation of steel deck’s stiffness should be small on the upper layer, and large on the bottom. This is not only good for the follow-up repair, but also could lower MPE-T. (5) Increase the thickness of the pavement and steel deck can lower MPE-T effectively. However, the change of E33-C is not so effective. (6) When the axle load and tire pressure increase, MPE-T and E33-C would also increase. (7) The change of distance of the floor beam does not influence MPE-T and E33-C effectively.
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