Three-Dimensional Numerical Analysis And Axel Load Conversion Of Portland Cement Concrete Pavements

The portland cement concrete pavements(PCC),as a kind of the advanced pavement structure which uses cement concrete in the surface, has got the extensive application all over the world, with the advantage of high strength,strong stiffness, good stability, great durability and little work in conventionality maintenance.But the pavement has to set a variety of joints for the material feature of cement concrete. The pavement is sensitive to the over loading, and it is difficult to rehabilitate after damag. With refined analysis of structures, it is not only useful to update the design theory of PCC, but also helpful to reduce the structural damage based on more accurate relation between the comprehensive function of load and environment and the responses of pavement structures.In view of the developing history of PCC, the structural design of pavement experienced three stages which were theoretic analysis, the influence diagram and finite element method. Along with the rising and fast development of the technology of computer, currently,the research agencies of many countries adopt the finite element method to simulate and calculate the concrete pavement structure more and more, and they have obtained great success.Along with the development of the economy, the vehicle axle load promotes continuously, and there are many over loaded vehicles.So the damage of the pavement is accelerated rapidly, and the original design method has not already been adapt to the circumstance very much.For this , the present paper selects the three-dimensional finite element...