In light of the importance of vehicle loads and speed in damage of road pavement structure

dynamic responses of road pavement under different vehicle loads and speeds are researched through in-situ experiments on a newly-built freeway. The research results show that the peak values of stress and strain increase with accretion of vehicle loads; but decreases with speed increasing; the increasing range with loads of the landscape orientation strain of front-wheel drive is less than the vertical strain of front-wheel drive; but the increasing range with loads of the landscape orientation strain and vertical strain of rear wheel is close; amplitude change of the dynamic stress and strain by speed is less than by loads; the effect of dynamic stress on pavement by vehicle traffic weaken promptly.