In order to analyzing the difference resulting from measurement point offset in the course of deflection measurements,the effect of measurement point offset on the deflection results are discussed by using two general deflection measurements.

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.

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.

The application of ARM in the falling weight deflectometer test system;