The Asphalt Pavement Vertical Stress Dynamic State Response under the Moving Load

Aiming at the common asphalt pavement structure combination, large general finite element software is used to build the three-dimensional model based on the multi- layer elastic system theory. The pavement structure vertical stress & time curve are analyzed entirely under the m oving load. The results show: the node vertical stress still appears tension & compression status a lternately and presents sine curve decreasing after the load acting. It is thus clear that the nodes vertical stress expresses vibration state under the moving load. Passing the same time length after the load acting the node, as the load moves from the front to the rear, the vertical stress of the node is also reduced. Thus, the vertical stress under moving load is more complex than that under s tatic load.