The Calculation And Analysis About The Stress Of Asphalt Pavement

In the development of our modernization construction, a great deal of highway have been built in our country. In the same time, the effects that a lot of damage happen in early phase make the highway can not be used normally.That a lot of damage happen in early phase is because of not only construction, design or climate, but also the condition of vehicle load. The vehicle load includes vertical and horizontal load. This paper especially thinks of the influence of over-load.According to analyses of the shortcomings of vertical load distributing evenly on the circle area which is often used in the design of highway, this paper uses the vertical load distributing like arbitrarily revolving paraboloid and single direction horizontal load. Program based on elastic layer system is used to calculate the stress in the asphalt pavement with semi-rigidity subbase, when vertical load uses vary load style modulus, horizontal load uses vary friction modulus and over-load happens.This paper analyzes the effects of the structure and material of the pavement work on the stress. Then, in order to reduce the adverse influence of over-load, some design measures of the structure and material of the pavement are presented.