Abstract
1. During the interaction of moving automobiles with road surface a dynamic stressed state appears in the road surface, which varies with time and depends on the weight of the automobiles and the rigidity and the uniformity of the road surfaces. 2. The total dynamic stressed state of the road surfaces consists of the sum of two stressed states. The first is a quasistatic state caused by the smooth unbroken displacement of the automobile wheels along the surface of the coating. With the increase of the speed of the automobile the fraction of the stresses and oscillations of this type of action decreases. The second stressed state is the wave state which appears from the impact of the pulled-away wheels of the automobile on the surface of nonuniform coatings. With the increase of the speed of the automobile the fraction of the stressed state of this type increases appreciably and predetermines the development of fatigue in road surfaces.
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