Structural Design and Mechanical Analysis of Full-Depth High Modulus Asphalt Concrete Pavement

The pavement special program PADS is used to calculate the three kinds of asphalt concrete pavement structure thickness which are full-depth high modulus,full-depth ordinary and semi-rigid base asphalt concrete pavement,respectively.The 3-D element model of asphalt concrete pavement structure is built based on the elastic mechanics to evaluate the design bottom stress state under loads.The rutting of the three kinds of pavement is determined by using asphalt concrete pavement permanent deformation prediction method in MEPDG of the United States.Also,their fatigue life is calculated.The results show that the full-depth high modulus asphalt concrete pavement structure is able to effectively decrease the thickness of the pavement structure,at the same time exhibits the best overall performance in rutting resistance and fatigue properties.