Therefore this paper put forward new corrections for highways of Xinjiang region through systemic study to solve the problem of the acceptance standards about subgrade deflection and pavement deflection in different seasons.

Through analyzing the methods deficiency in being which are used to back calculated pavement layer moduli,the scaled boundary finite element(SBFE)is introduced to solve road surface deflection.

Road surface deflection analysis under moving load;

Using 3-D numerical simulation, this paper reports the impact of pavement structural module on pavement surface deflection, compressive stress and tensile stress at the bottom of surface and base respectively.

The multi-index system including the surface deflection,the flexural-tensile stress at the bottom of semi-rigid base,and the rutting,were taken,when designed of heavy load pavement,to build up the formula for axle load conversion based on deflection,flexural-tensile stress and rutting,respectively,thus providing a reliable method for design of heavy load pavement.

This article describes the development meaning of the laser pavement deflection measuring instrumentation,the measuring theory,the structure of the instrument and the critical technology.

Therefore this paper put forward new corrections for highways of Xinjiang region through systemic study to solve the problem of the acceptance standards about subgrade deflection and pavement deflection in different seasons.

Finally, a FE analysis of pavement deflection is conducted by using the present constitutive model, showing that the intermingle of polymer fibers in asphalt concrete improves efficiently viscelastic property of pavements.